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.

A259164 Positive heptagonal numbers (A000566) that are squares (A000290) divided by 2.

Table of values

n a(n)
1 18
2 1877922
3 194706720450
4 20187582187830642
5 2093088896203949915058
6 217015642916030352905224578
7 22500615886726770153715544792802
8 2332908856150589340161504762302084050
9 241880656000904788079898366611289133690962

List of values

[18, 1877922, 194706720450, 20187582187830642, 2093088896203949915058, 217015642916030352905224578, 22500615886726770153715544792802, 2332908856150589340161504762302084050, 241880656000904788079898366611289133690962]

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

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