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.

A245140 E.g.f.: (cosh(2*x) + sinh(2*x)*cosh(x)) / (cosh(x) - sinh(x)*cosh(2*x)).

Table of values

n a(n)
0 1
1 3
2 9
3 45
4 297
5 2433
6 23949
7 275145
8 3612177
9 53348193
10 875453589
11 15802999545
12 311196040857
13 6638817262353
14 152521855979229
15 3754366520240745
16 98575724288354337
17 2749997026637342913
18 81230299711952152869
19 2532707187355266614745
20 83124358113443446120617
21 2864579803637260793877873

List of values

[1, 3, 9, 45, 297, 2433, 23949, 275145, 3612177, 53348193, 875453589, 15802999545, 311196040857, 6638817262353, 152521855979229, 3754366520240745, 98575724288354337, 2749997026637342913, 81230299711952152869, 2532707187355266614745, 83124358113443446120617, 2864579803637260793877873]

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

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