A129889 - cp's OEIS frontend

A129889 Write down n, then n*(n+1).

n	a(n)
0	0
1	0
2	1
3	2
4	2
5	6
6	3
7	12
8	4
9	20
10	5
11	30
12	6
13	42
14	7
15	56
16	8
17	72
18	9
19	90
20	10
21	110
22	11
23	132
24	12
25	156
26	13
27	182
28	14
29	210
30	15
31	240
32	16
33	272
34	17
35	306
36	18
37	342
38	19
39	380
40	20
41	420
42	21
43	462
44	22
45	506
46	23
47	552
48	24
49	600
50	25
51	650
52	26
53	702
54	27
55	756
56	28
57	812
58	29
59	870
60	30
61	930
62	31
63	992
64	32
65	1056
66	33

[0, 0, 1, 2, 2, 6, 3, 12, 4, 20, 5, 30, 6, 42, 7, 56, 8, 72, 9, 90, 10, 110, 11, 132, 12, 156, 13, 182, 14, 210, 15, 240, 16, 272, 17, 306, 18, 342, 19, 380, 20, 420, 21, 462, 22, 506, 23, 552, 24, 600, 25, 650, 26, 702, 27, 756, 28, 812, 29, 870, 30, 930, 31, 992, 32, 1056, 33]

cp's OEIS Frontend

A129889 Write down n, then n*(n+1).

Table of values

List of values