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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.

A367250 a(n) is the number of n-digit numbers whose difference between the largest and smallest digits is equal to 9.

Table of values

n a(n)
1 0
2 1
3 35
4 703
5 11231
6 158311
7 2062655
8 25466743
9 302423471
10 3487593511
11 39314599775
12 435241463383
13 4748453693711
14 51186327429511
15 546278900354495
16 5781325731101623
17 60750456603203951
18 634502309615150311
19 6592506388026870815
20 68188442304165981463
21 702543059232886986191

List of values

[0, 1, 35, 703, 11231, 158311, 2062655, 25466743, 302423471, 3487593511, 39314599775, 435241463383, 4748453693711, 51186327429511, 546278900354495, 5781325731101623, 60750456603203951, 634502309615150311, 6592506388026870815, 68188442304165981463, 702543059232886986191]

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

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