Triangle T(n,k) with the coefficient [x^k] of the series (1-x)^(n+1) * Sum_{j>=0} binomial(n+3*j,3*j)*x^j, in row n, column k.

A178618

Triangle T(n,k) with the coefficient [x^k] of the series (1-x)^(n+1) * Sum_{j>=0} binomial(n+3*j,3*j)*x^j, in row n, column k.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =1a(4) =7a(5) =1a(6) =1a(7) =16a(8) =10a(9) =1a(10) =30a(11) =45a(12) =5a(13) =1a(14) =50a(15) =141a(16) =50a(17) =1a(18) =1a(19) =77a(20) =357a(21) =266a(22) =28a(23) =1a(24) =112a(25) =784a(26) =1016a(27) =266a(28) =8a(29) =1

External references