A176826 - cp's OEIS frontend

A176826 a(n+1) = Sum_{p=0..n} (a(p)*a(n-p)+k)+l for n>=1, where a(0)=1, a(1)=1, k=1 and l=-1.

n	a(n)
0	1
1	1
2	3
3	9
4	27
5	85
6	283
7	985
8	3539
9	13013
10	48707
11	184921
12	710347
13	2755669
14	10780139
15	42477977
16	168439619
17	671641685
18	2691362195
19	10832277401
20	43771088315
21	177504638933
22	722178443963
23	2946919157081
24	12057932335283
25	49461067106261
26	203355663470307
27	837870162610137

[1, 1, 3, 9, 27, 85, 283, 985, 3539, 13013, 48707, 184921, 710347, 2755669, 10780139, 42477977, 168439619, 671641685, 2691362195, 10832277401, 43771088315, 177504638933, 722178443963, 2946919157081, 12057932335283, 49461067106261, 203355663470307, 837870162610137]

cp's OEIS Frontend

A176826 a(n+1) = Sum_{p=0..n} (a(p)*a(n-p)+k)+l for n>=1, where a(0)=1, a(1)=1, k=1 and l=-1.

Table of values

List of values