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.

A306267 Number of permutations of [n] within distance floor(n/2) of a fixed permutation.

Table of values

n a(n)
0 1
1 1
2 2
3 3
4 14
5 31
6 230
7 675
8 6902
9 25231
10 329462
11 1441923
12 22934774
13 116914351
14 2193664790
15 12764590275
16 276054834902
17 1805409270031
18 44222780245622
19 321113303226243
20 8787513806478134
21 70146437009397871
22 2121181056663291350
23 18462286083671614275

List of values

[1, 1, 2, 3, 14, 31, 230, 675, 6902, 25231, 329462, 1441923, 22934774, 116914351, 2193664790, 12764590275, 276054834902, 1805409270031, 44222780245622, 321113303226243, 8787513806478134, 70146437009397871, 2121181056663291350, 18462286083671614275]

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

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