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.

A264457 Number of permutations of [n] with exactly eight (possibly overlapping) occurrences of the generalized pattern 12-3.

Table of values

n a(n)
6 2
7 68
8 1303
9 19637
10 259676
11 3187742
12 37608672
13 435669452
14 5021292420
15 58054439247
16 676861345712
17 7985430177542
18 95546837440564
19 1161199181184289
20 14348225375153127
21 180370057811385955
22 2307651822107975903
23 30054039071752083133
24 398467881283163344126

List of values

[2, 68, 1303, 19637, 259676, 3187742, 37608672, 435669452, 5021292420, 58054439247, 676861345712, 7985430177542, 95546837440564, 1161199181184289, 14348225375153127, 180370057811385955, 2307651822107975903, 30054039071752083133, 398467881283163344126]

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

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