Triangle read by rows, T(n, k) = binomial(n, k) * Sum_{j=0..n-k} E(n-k, j)*2^j, where E(n, k) are the Eulerian numbers A173018(n, k), for 0 <= k <= n.
A154921
Triangle read by rows, T(n, k) = binomial(n, k) * Sum_{j=0..n-k} E(n-k, j)*2^j, where E(n, k) are the Eulerian numbers A173018(n, k), for 0 <= k <= n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =2a(5) =1a(6) =13a(7) =9a(8) =3a(9) =1a(10) =75a(11) =52a(12) =18a(13) =4a(14) =1a(15) =541a(16) =375a(17) =130a(18) =30a(19) =5a(20) =1a(21) =4683a(22) =3246a(23) =1125a(24) =260a(25) =45a(26) =6a(27) =1a(28) =47293a(29) =32781
External references
- oeis: A154921