A103143 - cp's OEIS frontend

A103143 a(n) = a(n-1) + a(n-2) + 3*a(n-3), with a(0) = 1, a(1) = 0, a(2) = 1.

n	a(n)
0	0
1	0
2	1
3	1
4	2
5	6
6	11
7	23
8	52
9	108
10	229
11	493
12	1046
13	2226
14	4751
15	10115
16	21544
17	45912
18	97801
19	208345
20	443882
21	945630
22	2014547
23	4291823
24	9143260
25	19478724
26	41497453
27	88405957
28	188339582
29	401237898
30	854795351
31	1821051995
32	3879561040
33	8264999088
34	17607716113

[0, 0, 1, 1, 2, 6, 11, 23, 52, 108, 229, 493, 1046, 2226, 4751, 10115, 21544, 45912, 97801, 208345, 443882, 945630, 2014547, 4291823, 9143260, 19478724, 41497453, 88405957, 188339582, 401237898, 854795351, 1821051995, 3879561040, 8264999088, 17607716113]

cp's OEIS Frontend

A103143 a(n) = a(n-1) + a(n-2) + 3*a(n-3), with a(0) = 1, a(1) = 0, a(2) = 1.

Table of values

List of values