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.

A133216 Integers that are simultaneously triangular (A000217) and decagonal (A001107).

Table of values

n a(n)
1 0
2 1
3 10
4 1540
5 11935
6 1777555
7 13773376
8 2051297326
9 15894464365
10 2367195337045
11 18342198104230
12 2731741367653000
13 21166880717817451
14 3152427171076225351
15 24426562006163234620
16 3637898223680596402450
17 28188231388231654934425
18 4198131397700237172202345

List of values

[0, 1, 10, 1540, 11935, 1777555, 13773376, 2051297326, 15894464365, 2367195337045, 18342198104230, 2731741367653000, 21166880717817451, 3152427171076225351, 24426562006163234620, 3637898223680596402450, 28188231388231654934425, 4198131397700237172202345]

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

Content is available under The OEIS End-User License Agreement.