Triangle read by rows: T(m, n, k) = 1 if k = 0 and T(m, n, k - 1) if k = n; otherwise (-1)^m*(k - n - 1)^m * T(m, n, k - 1) + T(m, n - 1, k) where m = 3.
A371996
Triangle read by rows: T(m, n, k) = 1 if k = 0 and T(m, n, k - 1) if k = n; otherwise (-1)^m*(k - n - 1)^m * T(m, n, k - 1) + T(m, n - 1, k) where m = 3.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =9a(5) =9a(6) =1a(7) =36a(8) =297a(9) =297a(10) =1a(11) =100a(12) =2997a(13) =24273a(14) =24273a(15) =1a(16) =225a(17) =17397a(18) =493992a(19) =3976209a(20) =3976209a(21) =1a(22) =441a(23) =72522a(24) =5135400a(25) =142632009a(26) =1145032281a(27) =1145032281a(28) =1a(29) =784
External references
- oeis: A371996