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.

A367248 a(n) is the number of n-digit numbers whose difference between the largest and smallest digits is equal to 7.

Table of values

n a(n)
1 0
2 5
3 111
4 1601
5 19095
6 204545
7 2045511
8 19508081
9 179752215
10 1613908385
11 14202967911
12 123028446161
13 1052237271735
14 8907026785025
15 74758478722311
16 623053865857841
17 5162154289325655
18 42558224511290465
19 349394287423788711
20 2858263098464575121
21 23311522539676521975

List of values

[0, 5, 111, 1601, 19095, 204545, 2045511, 19508081, 179752215, 1613908385, 14202967911, 123028446161, 1052237271735, 8907026785025, 74758478722311, 623053865857841, 5162154289325655, 42558224511290465, 349394287423788711, 2858263098464575121, 23311522539676521975]

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

Content is available under The OEIS End-User License Agreement.