A171370 - cp's OEIS frontend

A171370 Sequence generated from Lim:_{n..inf.} M^n, M = an infinite lower triangular matrix with (1,3,3,3,...) in every column, shifted down twice.

n	a(n)
0	1
1	3
2	6
3	12
4	18
5	30
6	42
7	66
8	84
9	120
10	150
11	210
12	252
13	336
14	402
15	534
16	618
17	786
18	906
19	1146
20	1296
21	1596
22	1806
23	2226
24	2478
25	2982
26	3318
27	3990
28	4392
29	5196
30	5730
31	6798
32	7416
33	8652
34	9438
35	11010
36	11916
37	13728
38	14874
39	17166
40	18462
41	21054
42	22650
43	25842
44	27648
45	31260

[1, 3, 6, 12, 18, 30, 42, 66, 84, 120, 150, 210, 252, 336, 402, 534, 618, 786, 906, 1146, 1296, 1596, 1806, 2226, 2478, 2982, 3318, 3990, 4392, 5196, 5730, 6798, 7416, 8652, 9438, 11010, 11916, 13728, 14874, 17166, 18462, 21054, 22650, 25842, 27648, 31260]

cp's OEIS Frontend

A171370 Sequence generated from Lim:_{n..inf.} M^n, M = an infinite lower triangular matrix with (1,3,3,3,...) in every column, shifted down twice.

Table of values

List of values