A120408 a(n) = n^1*(n+1)^2*(n+2)^3*(n+3)^4*(n+4)^5/(1!*2!*3!*4!*5!).

2500, 162000, 3781575, 49172480, 432081216, 2857680000, 15219319500, 68309049600, 266863130820, 929327871472, 2937513954375, 8547581952000, 23153892070400, 58918947333120, 141893427649968, 325406324160000, 714327643354500, 1507601438758800, 3070631112865855

Offset: 1

Author

Zerinvary Lajos, Jul 05 2006

Keywords

• easy
• nonn

Crossrefs

Cf. A090447, A090448, A090449, A120409.

Programs

Maple

[seq(n^1*(n+1)^2*(n+2)^3*(n+3)^4*(n+4)^5/(1!*2!*3!*4!*5!),n=1..37)];

Mathematica

Table[n^1*(n+1)^2*(n+2)^3*(n+3)^4*(n+4)^5/(1!*2!*3!*4!*5!),{n,19}] (* James C. McMahon, Oct 05 2024 *)

Extensions

Offset changed from 0 to 1 by Georg Fischer, May 08 2021

a(17)-a(19) from James C. McMahon, Oct 05 2024