{7, x}
{9, 504 + x^2}
{11, 720 + x^2}
{13, x*(8424 + x^2)}
{15, 75479040 + 52416*x^2 + x^4}
{17, 3863946240 + 137304*x^2 + x^4}
{19, x*(157480796160 + 1051056*x^2 + x^4)}
{21, 846951404399493120 + 3964520318976*x^2 + 4208328*x^4 + x^6}
{23, 29355848096337100800 + 80075672893440*x^2 + 18212256*x^4 + x^6}
{25, x*(8525473984011546132480 + 1829235783453696*x^2 + 82005048*x^4 +
x^6)}
{27, 11504038212791556285306765312000 +
1504656073789506657976320*x^2 + 42952961117454336*x^4 + 392859792*x^6 +
x^8}
{29, 314413564218057844192128584908800 +
86796969501555873609154560*x^2 + 695152274920574976*x^4 +
1575045288*x^6 + x^8}
{31,
x*(53022627980728885013250838206873600 +
8843016498387477437664460800*x^2 + 13385217439786530816*x^4 +
6445464192*x^6 + x^8)}
{33,
1888058182091900035260879008408420024265474048000 +
3255958989472680572341808997840621404160*x^2 +
1770124913308978219157966290944*x^4 + 391998966834786628608*x^6 +
34370853912*x^8 + x^10}
{35,
312215847668536935426829053910206397916349726720000 +
263926776346222541989515197971330341273600*x^2 +
63848670381929441119026051809280*x^4 + 4385591073067086544896*x^6 +
113690612592*x^8 + x^10}
{37,
x*(3112830702028694310589529810589660085818864951518822400 +
286049606581241273364343505789224571350548480*x^2 +
8830719713450547606263642355400704*x^4 +
109381854596941655267328*x^6 + 561197528712*x^8 + x^10)}
{39, 2437865632219861006076427608409793832243131014234151239693631488000\
00 + 11768522741474579470777736115742412736813523420393242624000*x^2 +
180656942559011757302342675759802698209123368960*x^4 +
966759205818764407083707779415801856*x^6 +
2301825778621030344849408*x^8 + 2498904705888*x^10 + x^12}
{41, 274408014004628075776198076573799102688951426631445720723646599659520\ 00 + 2543890701949306825129641076866463805145537023999845230182400*x^2 + 17126471610521058700252551007738746174123509022720*x^4 + 35318858633253875168667092967651016704*x^6 + 27679839477260762511940608*x^8 + 8987756595192*x^10 + x^12}