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.

A279043 Numbers k such that 3*k+1 and 4*k+1 are both triangular numbers (A000217).

Table of values

n a(n)
1 63
2 12285
3 2383290
4 462346038
5 89692748145
6 17399930794155
7 3375496881317988
8 654828995044895580
9 127033449541828424595
10 24643834382119669475913
11 4780776836681674049902590
12 927446062481862646011626610
13 179919755344644671652205659813

List of values

[63, 12285, 2383290, 462346038, 89692748145, 17399930794155, 3375496881317988, 654828995044895580, 127033449541828424595, 24643834382119669475913, 4780776836681674049902590, 927446062481862646011626610, 179919755344644671652205659813]

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

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