A308488 - cp's OEIS frontend

A308488 a(n) is the smallest n-gonal pyramidal number greater than 1 which is also n-gonal; a(n) = 0 when one does not exist.

n	a(n)
3	10
4	4900
5	0
6	946
7	0
8	1045
9	0
10	175
11	23725
12	0
13	0
14	441
15	0
16	0
17	975061
18	0
19	0
20	3578401
21	0
22	0
23	10680265
24	0
25	0
26	27453385
27	0
28	0
29	63016921
30	23001
31	0
32	132361021
33	0
34	0
35	258815701
36	0
37	0
38	477132085
39	0
40	0
41	55202400
42	0
43	245905
44	1408778281
45	0
46	0
47	2286380881
48	0
49	0
50	314755
51	0
52	0

[10, 4900, 0, 946, 0, 1045, 0, 175, 23725, 0, 0, 441, 0, 0, 975061, 0, 0, 3578401, 0, 0, 10680265, 0, 0, 27453385, 0, 0, 63016921, 23001, 0, 132361021, 0, 0, 258815701, 0, 0, 477132085, 0, 0, 55202400, 0, 245905, 1408778281, 0, 0, 2286380881, 0, 0, 314755, 0, 0]

cp's OEIS Frontend

A308488 a(n) is the smallest n-gonal pyramidal number greater than 1 which is also n-gonal; a(n) = 0 when one does not exist.

Table of values

List of values