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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.

A048904 Indices of heptagonal numbers (A000566) which are also octagonal.

Table of values

n a(n)
1 1
2 345
3 166145
4 80081401
5 38599068993
6 18604671173081
7 8967412906355905
8 4322274416192372985
9 2083327301191817422721
10 1004159436900039805378393
11 484002765258517994374962561
12 233288328695168773248926575865

List of values

[1, 345, 166145, 80081401, 38599068993, 18604671173081, 8967412906355905, 4322274416192372985, 2083327301191817422721, 1004159436900039805378393, 484002765258517994374962561, 233288328695168773248926575865]

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

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