G.f.: A(x,y) = exp( Sum_{n>=1} [Sum_{k=0..n} C(n,k)^6 * y^k] * x^n/n ) = Sum_{n>=0,k=0..n} T(n,k)*x^n*y^k, as a triangle of coefficients T(n,k) read by rows.

A218116

G.f.: A(x,y) = exp( Sum_{n>=1} [Sum_{k=0..n} C(n,k)^6 * y^k] * x^n/n ) = Sum_{n>=0,k=0..n} T(n,k)*x^n*y^k, as a triangle of coefficients T(n,k) read by rows.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =33a(5) =1a(6) =1a(7) =276a(8) =276a(9) =1a(10) =1a(11) =1300a(12) =12695a(13) =1300a(14) =1a(15) =1a(16) =4425a(17) =221495a(18) =221495a(19) =4425a(20) =1a(21) =1a(22) =12201a(23) =2185350a(24) =11534720a(25) =2185350a(26) =12201a(27) =1a(28) =1a(29) =29008

External references