Binomial coefficients C(61,n).

Terms

a(0) =1a(1) =61a(2) =1830a(3) =35990a(4) =521855a(5) =5949147a(6) =55525372a(7) =436270780a(8) =2944827765a(9) =17341763505a(10) =90177170226a(11) =418094152866