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.

A252747 Numbers n such that the hexagonal number H(n) is equal to the sum of four consecutive squares.

Table of values

n a(n)
1 18
2 42
3 602
4 1418
5 20442
6 48162
7 694418
8 1636082
9 23589762
10 55578618
11 801357482
12 1888036922
13 27222564618
14 64137676722
15 924765839522
16 2178792971618
17 31414815979122
18 74014823358282
19 1067178977450618
20 2514325201209962
21 36252670417341882
22 85413042017780418

List of values

[18, 42, 602, 1418, 20442, 48162, 694418, 1636082, 23589762, 55578618, 801357482, 1888036922, 27222564618, 64137676722, 924765839522, 2178792971618, 31414815979122, 74014823358282, 1067178977450618, 2514325201209962, 36252670417341882, 85413042017780418]

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

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