A108136 - cp's OEIS frontend

A108136 a(1)=1; a(2)=1; a(3)=1; a(n) = 3a(n-1) + 2a(n-2) + a(n-3).

n	a(n)
1	1
2	1
3	1
4	6
5	21
6	76
7	276
8	1001
9	3631
10	13171
11	47776
12	173301
13	628626
14	2280256
15	8271321
16	30003101
17	108832201
18	394774126
19	1431989881
20	5194350096
21	18841804176
22	68346102601
23	247916266251
24	899282808131
25	3262027059496
26	11832563061001

[1, 1, 1, 6, 21, 76, 276, 1001, 3631, 13171, 47776, 173301, 628626, 2280256, 8271321, 30003101, 108832201, 394774126, 1431989881, 5194350096, 18841804176, 68346102601, 247916266251, 899282808131, 3262027059496, 11832563061001]

cp's OEIS Frontend

A108136 a(1)=1; a(2)=1; a(3)=1; a(n) = 3a(n-1) + 2a(n-2) + a(n-3).

Table of values

List of values

cp's OEIS Frontend

A108136 a(1)=1; a(2)=1; a(3)=1; a(n) = 3*a(n-1) + 2*a(n-2) + a(n-3).

Table of values

List of values

A108136 a(1)=1; a(2)=1; a(3)=1; a(n) = 3a(n-1) + 2a(n-2) + a(n-3).