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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.

A381379 E.g.f. A(x) satisfies A(x) = 1/( 1 - x * cos(x * A(x)) )^2.

Table of values

n a(n)
0 1
1 2
2 6
3 18
4 -48
5 -2630
6 -52800
7 -824054
8 -8682240
9 54462258
10 7410631680
11 305163480578
12 8935815871488
13 167137193150954
14 -1440976761090048
15 -349400091225243270
16 -22113174143289262080
17 -960586728800597050526
18 -26252145855684866211840
19 255024367557922004307442

List of values

[1, 2, 6, 18, -48, -2630, -52800, -824054, -8682240, 54462258, 7410631680, 305163480578, 8935815871488, 167137193150954, -1440976761090048, -349400091225243270, -22113174143289262080, -960586728800597050526, -26252145855684866211840, 255024367557922004307442]

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

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