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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.

A296098 a(n) is the smallest triangular number (A000217) that can be represented as a product of k triangular numbers greater than 1 for all k = 1,2,...,n. a(n)=-1 if no such triangular number exists.

Table of values

n a(n)
1 3
2 36
3 630
4 25200
5 25200
6 2821500
7 55030954895280
8 55030954895280
9 55030954895280
10 55030954895280
11 55030954895280
12 55030954895280

List of values

[3, 36, 630, 25200, 25200, 2821500, 55030954895280, 55030954895280, 55030954895280, 55030954895280, 55030954895280, 55030954895280]

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

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