A176648 - cp's OEIS frontend

A176648 a(n+1) = m + Sum_{j=0..n} (a(j)*a(n-j) + k) for n>=1, with a(0)=1, a(1)=5, k=1 and m=1.

n	a(n)
0	1
1	5
2	13
3	55
4	245
5	1215
6	6317
7	34187
8	190093
9	1079983
10	6239989
11	36554363
12	216600357
13	1295906671
14	7817665373
15	47499325915
16	290411653437
17	1785401003887
18	11030252590149
19	68444469966843
20	426386709191893
21	2665740642304879

[1, 5, 13, 55, 245, 1215, 6317, 34187, 190093, 1079983, 6239989, 36554363, 216600357, 1295906671, 7817665373, 47499325915, 290411653437, 1785401003887, 11030252590149, 68444469966843, 426386709191893, 2665740642304879]

cp's OEIS Frontend

A176648 a(n+1) = m + Sum_{j=0..n} (a(j)*a(n-j) + k) for n>=1, with a(0)=1, a(1)=5, k=1 and m=1.

Table of values

List of values