A193668 - cp's OEIS frontend

A193668 a(n) = Sum_{i=0..n-1} (n+i)*a(n-1-i) for n>1, a(0)=1, a(1)=1.

n	a(n)
0	1
1	1
2	5
3	24
4	134
5	866
6	6392
7	53198
8	493628
9	5057522
10	56741240
11	692118422
12	9122245508
13	129220379978
14	1958059133552
15	31607140330670
16	541515698082332
17	9814691158604258
18	187629572002767848
19	3773371262361852422
20	79636835475910932020

[1, 1, 5, 24, 134, 866, 6392, 53198, 493628, 5057522, 56741240, 692118422, 9122245508, 129220379978, 1958059133552, 31607140330670, 541515698082332, 9814691158604258, 187629572002767848, 3773371262361852422, 79636835475910932020]

cp's OEIS Frontend

A193668 a(n) = Sum_{i=0..n-1} (n+i)*a(n-1-i) for n>1, a(0)=1, a(1)=1.

Table of values

List of values