A047866 - cp's OEIS frontend

A047866 a(n) = ceiling(n(n+1)(n+2)/8).

n	a(n)
0	0
1	1
2	3
3	8
4	15
5	27
6	42
7	63
8	90
9	124
10	165
11	215
12	273
13	342
14	420
15	510
16	612
17	727
18	855
19	998
20	1155
21	1329
22	1518
23	1725
24	1950
25	2194
26	2457
27	2741
28	3045
29	3372
30	3720
31	4092
32	4488
33	4909
34	5355
35	5828
36	6327
37	6855
38	7410
39	7995
40	8610
41	9256
42	9933
43	10643
44	11385

[0, 1, 3, 8, 15, 27, 42, 63, 90, 124, 165, 215, 273, 342, 420, 510, 612, 727, 855, 998, 1155, 1329, 1518, 1725, 1950, 2194, 2457, 2741, 3045, 3372, 3720, 4092, 4488, 4909, 5355, 5828, 6327, 6855, 7410, 7995, 8610, 9256, 9933, 10643, 11385]

cp's OEIS Frontend

A047866 a(n) = ceiling(n(n+1)(n+2)/8).

Table of values

List of values

cp's OEIS Frontend

A047866 a(n) = ceiling(n*(n+1)*(n+2)/8).

Table of values

List of values

A047866 a(n) = ceiling(n(n+1)(n+2)/8).