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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.

A257768 Numbers m such that for some power k, m is the sum of d + d^k as d runs through the digits of m.

Table of values

n a(n)
1 12
2 18
3 30
4 90
5 666
6 870
7 960
8 1998
9 7816
10 42648
11 119394
12 302034
13 360522
14 1741752
15 12051036
16 909341082
17 931186956
18 1136424308
19 1145082306
20 8390370196
21 49388550660
22 52927388760
23 100552730520
24 41845367362266
25 51671446297908
26 245917854035004
27 607628544623816
28 858683110606660
29 4023730658941192

List of values

[12, 18, 30, 90, 666, 870, 960, 1998, 7816, 42648, 119394, 302034, 360522, 1741752, 12051036, 909341082, 931186956, 1136424308, 1145082306, 8390370196, 49388550660, 52927388760, 100552730520, 41845367362266, 51671446297908, 245917854035004, 607628544623816, 858683110606660, 4023730658941192]

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

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