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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.

A081341 Expansion of exp(3*x)*cosh(3*x).

Table of values

n a(n)
0 1
1 3
2 18
3 108
4 648
5 3888
6 23328
7 139968
8 839808
9 5038848
10 30233088
11 181398528
12 1088391168
13 6530347008
14 39182082048
15 235092492288
16 1410554953728
17 8463329722368
18 50779978334208
19 304679870005248
20 1828079220031488
21 10968475320188928
22 65810851921133568

List of values

[1, 3, 18, 108, 648, 3888, 23328, 139968, 839808, 5038848, 30233088, 181398528, 1088391168, 6530347008, 39182082048, 235092492288, 1410554953728, 8463329722368, 50779978334208, 304679870005248, 1828079220031488, 10968475320188928, 65810851921133568]

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

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