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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.

A349266 Generalized Euler numbers, a(n) = n!*[x^n](sec(7*x)*(-sin(2*x) + sin(4*x) + sin(6*x) + cos(x) + cos(3*x) - cos(5*x))).

Table of values

n a(n)
0 1
1 8
2 64
3 904
4 15872
5 355688
6 9493504
7 296327464
8 10562158592
9 423645846728
10 18878667833344
11 925434038426824
12 49488442978598912
13 2866986638191472168
14 178867627497727197184
15 11956421282992330042984
16 852509723495811705208832
17 64584221654333725499376008

List of values

[1, 8, 64, 904, 15872, 355688, 9493504, 296327464, 10562158592, 423645846728, 18878667833344, 925434038426824, 49488442978598912, 2866986638191472168, 178867627497727197184, 11956421282992330042984, 852509723495811705208832, 64584221654333725499376008]

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

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