Triangle T(n, k, q) = (q*(n-k) +1)*T(n-1, k-1, q) + (q*k+1)*T(n-1, k, q) + q*A157522(n, k)*T(n-2, k-1, q), with T(n, 0, q) = T(n, n, q) = 1 and q = 1, read by rows.
A157523
Triangle T(n, k, q) = (q*(n-k) +1)*T(n-1, k-1, q) + (q*k+1)*T(n-1, k, q) + q*A157522(n, k)*T(n-2, k-1, q), with T(n, 0, q) = T(n, n, q) = 1 and q = 1, read by rows.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =1a(6) =1a(7) =15a(8) =15a(9) =1a(10) =1a(11) =37a(12) =95a(13) =37a(14) =1a(15) =1a(16) =82a(17) =463a(18) =463a(19) =82a(20) =1a(21) =1a(22) =173a(23) =1910a(24) =3799a(25) =1910a(26) =173a(27) =1a(28) =1a(29) =356
External references
- oeis: A157523