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.

A279298 Number of permutations of [n] having exactly nine (possibly overlapping) doubledescents.

Table of values

n a(n)
11 1
12 22
13 8417
14 279850
15 18342412
16 685212762
17 29029313611
18 1061113063498
19 39275632545209
20 1393699927780248
21 49383101195522106
22 1732429335364441968
23 60909095747242747307
24 2146854079671345945398
25 76207802610167861527865
26 2728392333397142478341958

List of values

[1, 22, 8417, 279850, 18342412, 685212762, 29029313611, 1061113063498, 39275632545209, 1393699927780248, 49383101195522106, 1732429335364441968, 60909095747242747307, 2146854079671345945398, 76207802610167861527865, 2728392333397142478341958]

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

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