A281026 - cp's OEIS frontend

A281026 a(n) = floor(3n(n+1)/4).

n	a(n)
0	0
1	1
2	4
3	9
4	15
5	22
6	31
7	42
8	54
9	67
10	82
11	99
12	117
13	136
14	157
15	180
16	204
17	229
18	256
19	285
20	315
21	346
22	379
23	414
24	450
25	487
26	526
27	567
28	609
29	652
30	697
31	744
32	792
33	841
34	892
35	945
36	999
37	1054
38	1111
39	1170
40	1230
41	1291
42	1354
43	1419
44	1485
45	1552
46	1621
47	1692
48	1764
49	1837
50	1912
51	1989
52	2067
53	2146

[0, 1, 4, 9, 15, 22, 31, 42, 54, 67, 82, 99, 117, 136, 157, 180, 204, 229, 256, 285, 315, 346, 379, 414, 450, 487, 526, 567, 609, 652, 697, 744, 792, 841, 892, 945, 999, 1054, 1111, 1170, 1230, 1291, 1354, 1419, 1485, 1552, 1621, 1692, 1764, 1837, 1912, 1989, 2067, 2146]

cp's OEIS Frontend

A281026 a(n) = floor(3n(n+1)/4).

Table of values

List of values

cp's OEIS Frontend

A281026 a(n) = floor(3*n*(n+1)/4).

Table of values

List of values

A281026 a(n) = floor(3n(n+1)/4).