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.

A177317 Number of permutations of n copies of 1..5 with all adjacent differences <= 1 in absolute value.

Table of values

n a(n)
0 1
1 2
2 48
3 2288
4 135040
5 8956752
6 640160976
7 48203722464
8 3772321496064
9 304100156874800
10 25098440923318048
11 2111488538062121088
12 180477438192133215952
13 15633823902235680250592
14 1369837117884520736235840
15 121216041295339359662340288
16 10819157637786569144853012480

List of values

[1, 2, 48, 2288, 135040, 8956752, 640160976, 48203722464, 3772321496064, 304100156874800, 25098440923318048, 2111488538062121088, 180477438192133215952, 15633823902235680250592, 1369837117884520736235840, 121216041295339359662340288, 10819157637786569144853012480]

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

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