A337591 - cp's OEIS frontend

A337591 a(0) = 1; a(n) = (1/n) * Sum_{k=1..n} binomial(n,k)^2 * k^3 * a(n-k).

n	a(n)
0	1
1	1
2	6
3	51
4	760
5	15545
6	428256
7	15043483
8	653049664
9	34204348305
10	2118834917200
11	152834879685851
12	12670536337934256
13	1194143629239156505
14	126753440317516749660
15	15031687739886065433375
16	1977667235694725269563136
17	286890421090357737699794209
18	45637300134026406622214264592

[1, 1, 6, 51, 760, 15545, 428256, 15043483, 653049664, 34204348305, 2118834917200, 152834879685851, 12670536337934256, 1194143629239156505, 126753440317516749660, 15031687739886065433375, 1977667235694725269563136, 286890421090357737699794209, 45637300134026406622214264592]

cp's OEIS Frontend

A337591 a(0) = 1; a(n) = (1/n) * Sum_{k=1..n} binomial(n,k)^2 * k^3 * a(n-k).

Table of values

List of values