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.

A002085 From the expansion of sinh(x) / cos(x): a(n) = odd part of A002084(n).

Table of values

n a(n)
0 1
1 1
2 9
3 39
4 1141
5 12721
6 804309
7 17113719
8 1886573641
9 65373260641
10 11127809595009
11 570506317184199
12 138730500808639741
13 9867549661639871761
14 3247323803322747092109
15 305991103023048833011479
16 130958280255560469436519441
17 15789929076277491342686566081

List of values

[1, 1, 9, 39, 1141, 12721, 804309, 17113719, 1886573641, 65373260641, 11127809595009, 570506317184199, 138730500808639741, 9867549661639871761, 3247323803322747092109, 305991103023048833011479, 130958280255560469436519441, 15789929076277491342686566081]

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

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