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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.

A110258 Denominators in the coefficients that form the odd-indexed partial quotients of the continued fraction representation of the inverse tangent of 1/x.

Table of values

n a(n)
1 1
2 4
3 64
4 256
5 16384
6 65536
7 1048576
8 4194304
9 1073741824
10 4294967296
11 68719476736
12 274877906944
13 17592186044416
14 70368744177664
15 1125899906842624
16 4503599627370496
17 4611686018427387904

List of values

[1, 4, 64, 256, 16384, 65536, 1048576, 4194304, 1073741824, 4294967296, 68719476736, 274877906944, 17592186044416, 70368744177664, 1125899906842624, 4503599627370496, 4611686018427387904]

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

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