A006478 - cp's OEIS frontend

A006478 a(n) = a(n-1) + a(n-2) + F(n) - 1, a(0) = a(1) = 0, where F() = Fibonacci numbers A000045.

n	a(n)
0	0
1	0
2	0
3	1
4	3
5	8
6	18
7	38
8	76
9	147
10	277
11	512
12	932
13	1676
14	2984
15	5269
16	9239
17	16104
18	27926
19	48210
20	82900
21	142055
22	242665
23	413376
24	702408
25	1190808
26	2014608
27	3401833
28	5734251
29	9650312
30	16216602
31	27213182
32	45608092
33	76345851
34	127656829
35	213230144
36	355817324
37	593205284

[0, 0, 0, 1, 3, 8, 18, 38, 76, 147, 277, 512, 932, 1676, 2984, 5269, 9239, 16104, 27926, 48210, 82900, 142055, 242665, 413376, 702408, 1190808, 2014608, 3401833, 5734251, 9650312, 16216602, 27213182, 45608092, 76345851, 127656829, 213230144, 355817324, 593205284]

cp's OEIS Frontend

A006478 a(n) = a(n-1) + a(n-2) + F(n) - 1, a(0) = a(1) = 0, where F() = Fibonacci numbers A000045.

Table of values

List of values