A269132 - cp's OEIS frontend

A269132 a(n) = n + floor(n(2n+1)/5).

n	a(n)
0	0
1	1
2	4
3	7
4	11
5	16
6	21
7	28
8	35
9	43
10	52
11	61
12	72
13	83
14	95
15	108
16	121
17	136
18	151
19	167
20	184
21	201
22	220
23	239
24	259
25	280
26	301
27	324
28	347
29	371
30	396
31	421
32	448
33	475
34	503
35	532
36	561
37	592
38	623
39	655
40	688
41	721
42	756
43	791
44	827
45	864
46	901
47	940
48	979
49	1019
50	1060
51	1101
52	1144
53	1187
54	1231

[0, 1, 4, 7, 11, 16, 21, 28, 35, 43, 52, 61, 72, 83, 95, 108, 121, 136, 151, 167, 184, 201, 220, 239, 259, 280, 301, 324, 347, 371, 396, 421, 448, 475, 503, 532, 561, 592, 623, 655, 688, 721, 756, 791, 827, 864, 901, 940, 979, 1019, 1060, 1101, 1144, 1187, 1231]

cp's OEIS Frontend

A269132 a(n) = n + floor(n(2n+1)/5).

Table of values

List of values

cp's OEIS Frontend

A269132 a(n) = n + floor(n*(2*n+1)/5).

Table of values

List of values

A269132 a(n) = n + floor(n(2n+1)/5).