A338788 - cp's OEIS frontend

A338788 a(n) = (n!/6) * Sum_{i,j,k > 0 and i+j+k=n} A000593(i)A000593(j)A000593(k)/(ijk).

n	a(n)
1	0
2	0
3	1
4	6
5	95
6	585
7	8974
8	70252
9	1178540
10	10683180
11	201213936
12	2151034776
13	46320457248
14	557515105056
15	12980593545984
16	179077693449600
17	4696518067511040
18	71418673681171200
19	2026061283912560640
20	33687422807179092480
21	1055027603388725452800
22	19337685190135751577600

[0, 0, 1, 6, 95, 585, 8974, 70252, 1178540, 10683180, 201213936, 2151034776, 46320457248, 557515105056, 12980593545984, 179077693449600, 4696518067511040, 71418673681171200, 2026061283912560640, 33687422807179092480, 1055027603388725452800, 19337685190135751577600]

cp's OEIS Frontend

A338788 a(n) = (n!/6) * Sum_{i,j,k > 0 and i+j+k=n} A000593(i)A000593(j)A000593(k)/(ijk).

Table of values

List of values

cp's OEIS Frontend

A338788 a(n) = (n!/6) * Sum_{i,j,k > 0 and i+j+k=n} A000593(i)*A000593(j)*A000593(k)/(i*j*k).

Table of values

List of values

A338788 a(n) = (n!/6) * Sum_{i,j,k > 0 and i+j+k=n} A000593(i)A000593(j)A000593(k)/(ijk).