A080394 - cp's OEIS frontend

A080394 Numbers k such that binomial(k, floor(k/2)) is divisible by k^2.

n	a(n)
1	1
2	195
3	273
4	357
5	385
6	399
7	585
8	627
9	665
10	897
11	935
12	945
13	957
14	975
15	1071
16	1085
17	1155
18	1209
19	1235
20	1395
21	1547
22	1581
23	1595
24	1705
25	1771
26	1848
27	1881
28	1925
29	1935
30	1995
31	2035
32	2091
33	2193
34	2255
35	2295
36	2331
37	2365
38	2405
39	2475
40	2574
41	2583
42	2585
43	2639
44	2665
45	2679

[1, 195, 273, 357, 385, 399, 585, 627, 665, 897, 935, 945, 957, 975, 1071, 1085, 1155, 1209, 1235, 1395, 1547, 1581, 1595, 1705, 1771, 1848, 1881, 1925, 1935, 1995, 2035, 2091, 2193, 2255, 2295, 2331, 2365, 2405, 2475, 2574, 2583, 2585, 2639, 2665, 2679]

cp's OEIS Frontend

A080394 Numbers k such that binomial(k, floor(k/2)) is divisible by k^2.

Table of values

List of values