a(n)=(13230+75008*n^2+65184*n-778248135*49^n+30720*n^3+502211745*81^n+295312500*25^n-26034048*9^n*n^2-4360032*9^n*n-395300640*49^n*n*19289340*9^ n+4096*n^4+352500000*25^n*n+9000000*25^n*n*n^n^ 2-4478976*9^n\n^3)/98304
a(n)=295*a(n-1)-36729*a(n-2)+2549775*a 93039731825*a(n-13)-112000136889375*a(-n14)+19937341265625*a(n-15)
GF(z)=(7936+1305088*z-79792256*z^2-109331968*z^3+41828672000*z^4-460917924352*z^5+238697445120*z^6+506784271872*z*z^7-14723693948160*z^8+12172737024000*z^9+8101522800000*z^10)/(1-z)^5/(1-9*z)^4/(1-25*z)
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