A255261 - cp's OEIS frontend

A255261 a(n) = a(n-1) + sum of the hexagonal numbers which are among the first (n-1) terms of the sequence, with a(1)=1.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	13
8	20
9	27
10	34
11	41
12	48
13	55
14	62
15	69
16	76
17	83
18	90
19	97
20	104
21	111
22	118
23	125
24	132
25	139
26	146
27	153
28	313
29	473
30	633
31	793
32	953
33	1113
34	1273
35	1433
36	1593
37	1753
38	1913
39	2073
40	2233
41	2393
42	2553
43	2713
44	2873
45	3033
46	3193
47	3353
48	3513
49	3673
50	3833
51	3993
52	4153

[1, 2, 3, 4, 5, 6, 13, 20, 27, 34, 41, 48, 55, 62, 69, 76, 83, 90, 97, 104, 111, 118, 125, 132, 139, 146, 153, 313, 473, 633, 793, 953, 1113, 1273, 1433, 1593, 1753, 1913, 2073, 2233, 2393, 2553, 2713, 2873, 3033, 3193, 3353, 3513, 3673, 3833, 3993, 4153]

cp's OEIS Frontend

A255261 a(n) = a(n-1) + sum of the hexagonal numbers which are among the first (n-1) terms of the sequence, with a(1)=1.

Table of values

List of values