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.

A276842 Number of permutations of [n] such that for each cycle c the smallest integer interval containing all elements of c has at most eight elements.

Table of values

n a(n)
0 1
1 1
2 2
3 6
4 24
5 120
6 720
7 5040
8 40320
9 181440
10 756000
11 3160080
12 13602600
13 60926580
14 285159966
15 1396646055
16 7158444465
17 35019420060
18 165994449732
19 774542703708
20 3596199290264
21 16729008975792
22 78297230499296
23 369560004222048
24 1760728654735744
25 8392003472443920

List of values

[1, 1, 2, 6, 24, 120, 720, 5040, 40320, 181440, 756000, 3160080, 13602600, 60926580, 285159966, 1396646055, 7158444465, 35019420060, 165994449732, 774542703708, 3596199290264, 16729008975792, 78297230499296, 369560004222048, 1760728654735744, 8392003472443920]

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

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