A248098 - cp's OEIS frontend

A248098 a(n) = 1 + a(n-1) + a(n-2) + a(n-3) if n>=4; a(1) = a(2) = a(3) = 1.

n	a(n)
1	1
2	1
3	1
4	4
5	7
6	13
7	25
8	46
9	85
10	157
11	289
12	532
13	979
14	1801
15	3313
16	6094
17	11209
18	20617
19	37921
20	69748
21	128287
22	235957
23	433993
24	798238
25	1468189
26	2700421
27	4966849
28	9135460
29	16802731
30	30905041
31	56843233
32	104551006
33	192299281
34	353693521

[1, 1, 1, 4, 7, 13, 25, 46, 85, 157, 289, 532, 979, 1801, 3313, 6094, 11209, 20617, 37921, 69748, 128287, 235957, 433993, 798238, 1468189, 2700421, 4966849, 9135460, 16802731, 30905041, 56843233, 104551006, 192299281, 353693521]

cp's OEIS Frontend

A248098 a(n) = 1 + a(n-1) + a(n-2) + a(n-3) if n>=4; a(1) = a(2) = a(3) = 1.

Table of values

List of values