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.

A317289 Number of permutations of [n] with exactly nine increasing runs of even length.

Table of values

n a(n)
18 2404879675441
19 208031951035452
20 10539887638301128
21 438391470941407244
22 16755405367563104497
23 607314204208297961718
24 21247637795898419646167
25 729013114914519439841722
26 24775048055015061709737839
27 838857400014414535124226202
28 28428368151331776174951956983

List of values

[2404879675441, 208031951035452, 10539887638301128, 438391470941407244, 16755405367563104497, 607314204208297961718, 21247637795898419646167, 729013114914519439841722, 24775048055015061709737839, 838857400014414535124226202, 28428368151331776174951956983]

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

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