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.

A264328 Number of permutations of [n] with exactly nine (possibly overlapping) occurrences of the consecutive pattern 3412.

Table of values

n a(n)
20 1
21 674
22 2303616
23 973634586
24 268005993787
25 51887116335484
26 7600128199862568
27 895722436144355244
28 89201027054224688321
29 7802920098962657368730
30 618120919239542449482268
31 45404526954279222716028042
32 3149675297814422746286790949
33 209262784249053678340807305608

List of values

[1, 674, 2303616, 973634586, 268005993787, 51887116335484, 7600128199862568, 895722436144355244, 89201027054224688321, 7802920098962657368730, 618120919239542449482268, 45404526954279222716028042, 3149675297814422746286790949, 209262784249053678340807305608]

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

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