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.

A253716 Hexagonal numbers (A000384) which are also centered heptagonal numbers (A069099).

Table of values

n a(n)
1 1
2 16322041
3 4145734153
4 67933251842771953
5 17254778510170993681
6 282742011610770921096804841
7 71815357774355276244995175961
8 1176788140728629029198108610250463201
9 298899554649081431834808455098428958753
10 4897858370145334123819452782766901335994312153

List of values

[1, 16322041, 4145734153, 67933251842771953, 17254778510170993681, 282742011610770921096804841, 71815357774355276244995175961, 1176788140728629029198108610250463201, 298899554649081431834808455098428958753, 4897858370145334123819452782766901335994312153]

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

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