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.

A068127 Triangular numbers with sum of digits = 3.

Table of values

n a(n)
1 3
2 21
3 120
4 210
5 300
6 10011
7 20100
8 2001000
9 200010000
10 20000100000
11 2000001000000
12 200000010000000
13 20000000100000000
14 2000000001000000000
15 200000000010000000000
16 20000000000100000000000
17 2000000000001000000000000
18 200000000000010000000000000
19 20000000000000100000000000000

List of values

[3, 21, 120, 210, 300, 10011, 20100, 2001000, 200010000, 20000100000, 2000001000000, 200000010000000, 20000000100000000, 2000000001000000000, 200000000010000000000, 20000000000100000000000, 2000000000001000000000000, 200000000000010000000000000, 20000000000000100000000000000]

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

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