a(n) = binomial(a,b) where a>=b and one of a and b is the product of the nonzero decimal digits of n and the other is the sum of the decimal digits of n.

A067453

a(n) = binomial(a,b) where a>=b and one of a and b is the product of the nonzero decimal digits of n and the other is the sum of the decimal digits of n.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =1a(10) =1a(11) =2a(12) =3a(13) =4a(14) =5a(15) =6a(16) =7a(17) =8a(18) =9a(19) =10a(20) =1a(21) =3a(22) =1a(23) =6a(24) =28a(25) =120a(26) =495a(27) =2002a(28) =8008a(29) =31824

External references