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.

A259157 Positive triangular numbers (A000217) that are hexagonal numbers (A000384) divided by 2.

Table of values

n a(n)
1 3
2 3570
3 4119885
4 4754343828
5 5486508657735
6 6331426236682470
7 7306460390622912753
8 8431648959352604634600
9 9730115592632515125415755
10 11228544962248963102125146778
11 12957731156319710787337293966165
12 14953210525847983999624135111807740

List of values

[3, 3570, 4119885, 4754343828, 5486508657735, 6331426236682470, 7306460390622912753, 8431648959352604634600, 9730115592632515125415755, 11228544962248963102125146778, 12957731156319710787337293966165, 14953210525847983999624135111807740]

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

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