cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A374371 Least n-gonal number that can be written as a product of two or more smaller n-gonal numbers, or 0 if no such number exists.

Table of values

n a(n)
2 4
3 36
4 16
5 10045
6 2850
7 6426
8 1408
9 265926
10 69300
11 79135
12 9504
13 195615
14 145236
15 126630
16 42120
17 81356859
18 9410205
19 165550
20 1379840
21 11340
22 3009069
23 8321351148
24 316200
25 47555937
26 218338146
27 9042726
28 822528
29 12300400
30 300186051
31 46955700
32 766737400
33 206898615

List of values

[4, 36, 16, 10045, 2850, 6426, 1408, 265926, 69300, 79135, 9504, 195615, 145236, 126630, 42120, 81356859, 9410205, 165550, 1379840, 11340, 3009069, 8321351148, 316200, 47555937, 218338146, 9042726, 822528, 12300400, 300186051, 46955700, 766737400, 206898615]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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