Irregular triangle T(n, k) = [x^k]( p(n, x) ), where p(n, x) = ( (1-x)^(n+1) * Sum_{k >= 0} (2*k+1)^(n-1)*x^k )^2, read by rows.
A165890
Irregular triangle T(n, k) = [x^k]( p(n, x) ), where p(n, x) = ( (1-x)^(n+1) * Sum_{k >= 0} (2*k+1)^(n-1)*x^k )^2, read by rows.
Terms
- a(0) =1a(1) =1a(2) =-2a(3) =1a(4) =1a(5) =0a(6) =-2a(7) =0a(8) =1a(9) =1a(10) =10a(11) =15a(12) =-52a(13) =15a(14) =10a(15) =1a(16) =1a(17) =44a(18) =484a(19) =-44a(20) =-970a(21) =-44a(22) =484a(23) =44a(24) =1a(25) =1a(26) =150a(27) =5933a(28) =22792a(29) =466
External references
- oeis: A165890