Stirling numbers of second kind S(n,n-6).

Terms

a(0) =0a(1) =1a(2) =127a(3) =3025a(4) =34105a(5) =246730a(6) =1323652a(7) =5715424a(8) =20912320a(9) =67128490a(10) =193754990a(11) =512060978a(12) =1256328866a(13) =2892439160a(14) =6302524580a(15) =13087462580a(16) =26046574004a(17) =49916988803a(18) =92484925445a(19) =166218969675a(20) =290622864675a(21) =495564056130a(22) =825906183960