A053643 - cp's OEIS frontend

A053643 a(n) = ceiling(binomial(n,6)/n).

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	1
8	4
9	10
10	21
11	42
12	77
13	132
14	215
15	334
16	501
17	728
18	1032
19	1428
20	1938
21	2584
22	3392
23	4389
24	5609
25	7084
26	8855
27	10964
28	13455
29	16380
30	19793
31	23751
32	28319
33	33563
34	39556
35	46376
36	54106
37	62832
38	72650
39	83657
40	95960
41	109668
42	124900

[0, 0, 0, 0, 0, 1, 1, 4, 10, 21, 42, 77, 132, 215, 334, 501, 728, 1032, 1428, 1938, 2584, 3392, 4389, 5609, 7084, 8855, 10964, 13455, 16380, 19793, 23751, 28319, 33563, 39556, 46376, 54106, 62832, 72650, 83657, 95960, 109668, 124900]

cp's OEIS Frontend

A053643 a(n) = ceiling(binomial(n,6)/n).

Table of values

List of values