G.f.: (1+62*x+565*x^2+1050*x^3+485*x^4+52*x^5+x^6)/(1-x)^7.

Terms

a(0) =1a(1) =69a(2) =1027a(3) =6825a(4) =29073a(5) =93789a(6) =250363a(7) =582737a(8) =1222801a(9) =2366005a(10) =4289187a(11) =7370617a(12) =12112257a(13) =19164237a(14) =29351547a(15) =43702945a(16) =63482081a(17) =90220837a(18) =125754883a(19) =172261449a(20) =232299313a(21) =308851005a(22) =405367227a(23) =525813489a(24) =674718961