Triangle T(n, k, m) = (m*(n-k) + 1)*T(n-1, k-1, m) + (m*k + 1)*T(n-1, k, m) - m*k*(n-k)*T(n-2, k-1, m) with T(n, 0, m) = T(n, n, m) = 1 and m = 4, read by rows.

A157155

Triangle T(n, k, m) = (m*(n-k) + 1)*T(n-1, k-1, m) + (m*k + 1)*T(n-1, k, m) - m*k*(n-k)*T(n-2, k-1, m) with T(n, 0, m) = T(n, n, m) = 1 and m = 4, read by rows.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =6a(5) =1a(6) =1a(7) =31a(8) =31a(9) =1a(10) =1a(11) =156a(12) =462a(13) =156a(14) =1a(15) =1a(16) =781a(17) =5442a(18) =5442a(19) =781a(20) =1a(21) =1a(22) =3906a(23) =57263a(24) =124860a(25) =57263a(26) =3906a(27) =1a(28) =1a(29) =19531

External references