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.

A367245 a(n) is the number of n-digit numbers whose difference between the largest and smallest digits is equal to 4.

Table of values

n a(n)
1 0
2 11
3 135
4 1103
5 7551
6 46871
7 273735
8 1534943
9 8366031
10 44674151
11 234982935
12 1222071983
13 6301114911
14 32274971831
15 164471580135
16 834802180223
17 4223960206191
18 21320114811911
19 107403378865335
20 540232762595663
21 2714041233191871
22 13621757688226391
23 68315120054438535

List of values

[0, 11, 135, 1103, 7551, 46871, 273735, 1534943, 8366031, 44674151, 234982935, 1222071983, 6301114911, 32274971831, 164471580135, 834802180223, 4223960206191, 21320114811911, 107403378865335, 540232762595663, 2714041233191871, 13621757688226391, 68315120054438535]

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

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