A277406 - cp's OEIS frontend

A277406 a(n) equals the sum of all permutations of compositions of functions (1 + k*x) for k=1..n, evaluated at x=1.

n	a(n)
0	1
1	2
2	9
3	76
4	1100
5	25176
6	846132
7	39321696
8	2413753344
9	189030205440
10	18383301319680
11	2172771551093760
12	306662748175330560
13	50933260598106862080
14	9832247390118248121600
15	2182733403365330313523200
16	552134185815355910465126400
17	157863713952139655599757721600
18	50654908373638564216229105664000

[1, 2, 9, 76, 1100, 25176, 846132, 39321696, 2413753344, 189030205440, 18383301319680, 2172771551093760, 306662748175330560, 50933260598106862080, 9832247390118248121600, 2182733403365330313523200, 552134185815355910465126400, 157863713952139655599757721600, 50654908373638564216229105664000]

cp's OEIS Frontend

A277406 a(n) equals the sum of all permutations of compositions of functions (1 + k*x) for k=1..n, evaluated at x=1.

Table of values

List of values