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.

A036521 Smallest triangular number containing exactly n 4's.

Table of values

n a(n)
1 45
2 4465
3 144453
4 544446
5 427444941
6 414446445
7 4440447441
8 444344944456
9 4404424444435
10 1046444944404441
11 14546344444444945
12 441441444448564440
13 4445444444946443841
14 444438244043444444046
15 4444844454444484014645
16 44641424644444444411441
17 4024414288444444444404441
18 44448461444441444448442420

List of values

[45, 4465, 144453, 544446, 427444941, 414446445, 4440447441, 444344944456, 4404424444435, 1046444944404441, 14546344444444945, 441441444448564440, 4445444444946443841, 444438244043444444046, 4444844454444484014645, 44641424644444444411441, 4024414288444444444404441, 44448461444441444448442420]

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

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