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.

A278080 Expansion of e.g.f. (1/4!)*sin^4(x)/cos(x) (coefficients of even powers only).

Table of values

n a(n)
0 0
1 0
2 1
3 -5
4 126
5 1490
6 118151
7 8256885
8 808428076
9 100199284180
10 15432169163901
11 2889536106161375
12 646438926423519626
13 170294687860735726470
14 52177485058722877649251
15 18397662218707151323777465
16 7396641315814156362154666776

List of values

[0, 0, 1, -5, 126, 1490, 118151, 8256885, 808428076, 100199284180, 15432169163901, 2889536106161375, 646438926423519626, 170294687860735726470, 52177485058722877649251, 18397662218707151323777465, 7396641315814156362154666776]

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

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