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.

A308681 E.g.f.: (sec(x) - tan(x)) / sqrt(1 - 2*x).

Table of values

n a(n)
0 1
1 0
2 2
3 7
4 60
5 519
6 5890
7 76637
8 1158808
9 19770383
10 377036646
11 7939301349
12 183033429524
13 4584731740471
14 123994410402122
15 3601004174824573
16 111771076844177328
17 3692510526181175583
18 129364120799128910158
19 4790645026641043053269
20 186981399898552187792620

List of values

[1, 0, 2, 7, 60, 519, 5890, 76637, 1158808, 19770383, 377036646, 7939301349, 183033429524, 4584731740471, 123994410402122, 3601004174824573, 111771076844177328, 3692510526181175583, 129364120799128910158, 4790645026641043053269, 186981399898552187792620]

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

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