Irregular triangle read by rows: T(n,k) = [x^k] (1+x) * A_n(x)^2, where A_n(x) is the n-th Eulerian polynomial.
A382232
Irregular triangle read by rows: T(n,k) = [x^k] (1+x) * A_n(x)^2, where A_n(x) is the n-th Eulerian polynomial.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =3a(7) =1a(8) =1a(9) =9a(10) =26a(11) =26a(12) =9a(13) =1a(14) =1a(15) =23a(16) =165a(17) =387a(18) =387a(19) =165a(20) =23a(21) =1a(22) =1a(23) =53a(24) =860a(25) =4292a(26) =9194a(27) =9194a(28) =4292a(29) =860
External references
- oeis: A382232