A071619 - cp's OEIS frontend

A071619 a(n) = ceiling(2*n^2 / 3).

n	a(n)
0	0
1	1
2	3
3	6
4	11
5	17
6	24
7	33
8	43
9	54
10	67
11	81
12	96
13	113
14	131
15	150
16	171
17	193
18	216
19	241
20	267
21	294
22	323
23	353
24	384
25	417
26	451
27	486
28	523
29	561
30	600
31	641
32	683
33	726
34	771
35	817
36	864
37	913
38	963
39	1014
40	1067
41	1121
42	1176
43	1233
44	1291
45	1350
46	1411
47	1473
48	1536
49	1601
50	1667
51	1734
52	1803
53	1873

[0, 1, 3, 6, 11, 17, 24, 33, 43, 54, 67, 81, 96, 113, 131, 150, 171, 193, 216, 241, 267, 294, 323, 353, 384, 417, 451, 486, 523, 561, 600, 641, 683, 726, 771, 817, 864, 913, 963, 1014, 1067, 1121, 1176, 1233, 1291, 1350, 1411, 1473, 1536, 1601, 1667, 1734, 1803, 1873]

cp's OEIS Frontend

A071619 a(n) = ceiling(2*n^2 / 3).

Table of values

List of values