A027480 - cp's OEIS frontend

A027480 a(n) = n(n+1)(n+2)/2.

n	a(n)
0	0
1	3
2	12
3	30
4	60
5	105
6	168
7	252
8	360
9	495
10	660
11	858
12	1092
13	1365
14	1680
15	2040
16	2448
17	2907
18	3420
19	3990
20	4620
21	5313
22	6072
23	6900
24	7800
25	8775
26	9828
27	10962
28	12180
29	13485
30	14880
31	16368
32	17952
33	19635
34	21420
35	23310
36	25308
37	27417
38	29640
39	31980
40	34440

[0, 3, 12, 30, 60, 105, 168, 252, 360, 495, 660, 858, 1092, 1365, 1680, 2040, 2448, 2907, 3420, 3990, 4620, 5313, 6072, 6900, 7800, 8775, 9828, 10962, 12180, 13485, 14880, 16368, 17952, 19635, 21420, 23310, 25308, 27417, 29640, 31980, 34440]

cp's OEIS Frontend

A027480 a(n) = n(n+1)(n+2)/2.

Table of values

List of values

cp's OEIS Frontend

A027480 a(n) = n*(n+1)*(n+2)/2.

Table of values

List of values

A027480 a(n) = n(n+1)(n+2)/2.