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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.

A099140 a(n) = 4^n * T(n,3/2) where T is the Chebyshev polynomial of the first kind.

Table of values

n a(n)
0 1
1 6
2 56
3 576
4 6016
5 62976
6 659456
7 6905856
8 72318976
9 757334016
10 7930904576
11 83053510656
12 869747654656
13 9108115685376
14 95381425750016
15 998847258034176
16 10460064284409856
17 109539215284371456
18 1147109554861899776

List of values

[1, 6, 56, 576, 6016, 62976, 659456, 6905856, 72318976, 757334016, 7930904576, 83053510656, 869747654656, 9108115685376, 95381425750016, 998847258034176, 10460064284409856, 109539215284371456, 1147109554861899776]

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

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