A093960 - cp's OEIS frontend

A093960 a(1) = 1, a(2) = 2, a(n+1) = na(1) + (n-1)a(2) + ... + (n-r)*a(r+1) + ... + a(n).

n	a(n)
1	1
2	2
3	4
4	11
5	29
6	76
7	199
8	521
9	1364
10	3571
11	9349
12	24476
13	64079
14	167761
15	439204
16	1149851
17	3010349
18	7881196
19	20633239
20	54018521
21	141422324
22	370248451
23	969323029
24	2537720636
25	6643838879
26	17393796001
27	45537549124
28	119218851371
29	312119004989
30	817138163596

[1, 2, 4, 11, 29, 76, 199, 521, 1364, 3571, 9349, 24476, 64079, 167761, 439204, 1149851, 3010349, 7881196, 20633239, 54018521, 141422324, 370248451, 969323029, 2537720636, 6643838879, 17393796001, 45537549124, 119218851371, 312119004989, 817138163596]

cp's OEIS Frontend

A093960 a(1) = 1, a(2) = 2, a(n+1) = na(1) + (n-1)a(2) + ... + (n-r)*a(r+1) + ... + a(n).

Table of values

List of values

cp's OEIS Frontend

A093960 a(1) = 1, a(2) = 2, a(n+1) = n*a(1) + (n-1)*a(2) + ... + (n-r)*a(r+1) + ... + a(n).

Table of values

List of values

A093960 a(1) = 1, a(2) = 2, a(n+1) = na(1) + (n-1)a(2) + ... + (n-r)*a(r+1) + ... + a(n).