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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.

A154925 The terms of this sequence are integer values of consecutive denominators (with signs) from the fractional expansion (using only fractions with numerators to be positive 1's) of the BBP polynomial ( 4/(8*k+1) - 2/(8*k+4) - 1/(8*k+5) - 1/(8*k+6) ) for all k (starting from 0 to infinity).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 -2
5 -5
6 -6
7 3
8 9
9 -5
10 -13
11 -14
12 5
13 30
14 510
15 -10
16 -21
17 -22
18 7
19 59
20 5163
21 53307975
22 -14
23 -29
24 -30

List of values

[1, 1, 1, 1, -2, -5, -6, 3, 9, -5, -13, -14, 5, 30, 510, -10, -21, -22, 7, 59, 5163, 53307975, -14, -29, -30]

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

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