A307677 - cp's OEIS frontend

A307677 a(0) = a(1) = a(2) = a(3) = 1; thereafter a(n) = a(n-1) + a(n-2) + a(n-4).

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	5
6	9
7	15
8	27
9	47
10	83
11	145
12	255
13	447
14	785
15	1377
16	2417
17	4241
18	7443
19	13061
20	22921
21	40223
22	70587
23	123871
24	217379
25	381473
26	669439
27	1174783
28	2061601
29	3617857
30	6348897
31	11141537
32	19552035
33	34311429
34	60212361
35	105665327
36	185429723
37	325406479
38	571048563
39	1002120369

[1, 1, 1, 1, 3, 5, 9, 15, 27, 47, 83, 145, 255, 447, 785, 1377, 2417, 4241, 7443, 13061, 22921, 40223, 70587, 123871, 217379, 381473, 669439, 1174783, 2061601, 3617857, 6348897, 11141537, 19552035, 34311429, 60212361, 105665327, 185429723, 325406479, 571048563, 1002120369]

cp's OEIS Frontend

A307677 a(0) = a(1) = a(2) = a(3) = 1; thereafter a(n) = a(n-1) + a(n-2) + a(n-4).

Table of values

List of values