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.

A201633 Numbers k such that Sum_{j=0..3} (k + j)^2 is a triangular number.

Table of values

n a(n)
1 11
2 28
3 424
4 1001
5 14453
6 34054
7 491026
8 1156883
9 16680479
10 39300016
11 566645308
12 1335043709
13 19249260041
14 45352186138
15 653908196134
16 1540639285031
17 22213629408563
18 52336383504964
19 754609491695056
20 1777896399883793
21 25634509088223389
22 60396141212544046

List of values

[11, 28, 424, 1001, 14453, 34054, 491026, 1156883, 16680479, 39300016, 566645308, 1335043709, 19249260041, 45352186138, 653908196134, 1540639285031, 22213629408563, 52336383504964, 754609491695056, 1777896399883793, 25634509088223389, 60396141212544046]

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

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