A303303 - cp's OEIS frontend

A303303 Generalized 23-gonal (or icositrigonal) numbers: m(21m - 19)/2 with m = 0, +1, -1, +2, -2, +3, -3, ...

n	a(n)
0	0
1	1
2	20
3	23
4	61
5	66
6	123
7	130
8	206
9	215
10	310
11	321
12	435
13	448
14	581
15	596
16	748
17	765
18	936
19	955
20	1145
21	1166
22	1375
23	1398
24	1626
25	1651
26	1898
27	1925
28	2191
29	2220
30	2505
31	2536
32	2840
33	2873
34	3196
35	3231
36	3573
37	3610
38	3971
39	4010
40	4390
41	4431
42	4830
43	4873
44	5291
45	5336
46	5773
47	5820
48	6276
49	6325
50	6800
51	6851
52	7345
53	7398
54	7911
55	7966

[0, 1, 20, 23, 61, 66, 123, 130, 206, 215, 310, 321, 435, 448, 581, 596, 748, 765, 936, 955, 1145, 1166, 1375, 1398, 1626, 1651, 1898, 1925, 2191, 2220, 2505, 2536, 2840, 2873, 3196, 3231, 3573, 3610, 3971, 4010, 4390, 4431, 4830, 4873, 5291, 5336, 5773, 5820, 6276, 6325, 6800, 6851, 7345, 7398, 7911, 7966]

cp's OEIS Frontend

A303303 Generalized 23-gonal (or icositrigonal) numbers: m(21m - 19)/2 with m = 0, +1, -1, +2, -2, +3, -3, ...

Table of values

List of values

cp's OEIS Frontend

A303303 Generalized 23-gonal (or icositrigonal) numbers: m*(21*m - 19)/2 with m = 0, +1, -1, +2, -2, +3, -3, ...

Table of values

List of values

A303303 Generalized 23-gonal (or icositrigonal) numbers: m(21m - 19)/2 with m = 0, +1, -1, +2, -2, +3, -3, ...