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.

A189503 Number of arrangements of 7 nonzero numbers x(i) in -n..n with the sum of floor(x(i)/x(i+1)) equal to zero.

Table of values

n a(n)
1 40
2 1892
3 27508
4 182634
5 787412
6 2642358
7 7269852
8 17692662
9 38791846
10 78583484
11 149461616
12 269390980
13 462294730
14 765448244
15 1224516760
16 1898713570
17 2870678078
18 4243248920
19 6141093956
20 8731426052
21 12179866066
22 16758644852

List of values

[40, 1892, 27508, 182634, 787412, 2642358, 7269852, 17692662, 38791846, 78583484, 149461616, 269390980, 462294730, 765448244, 1224516760, 1898713570, 2870678078, 4243248920, 6141093956, 8731426052, 12179866066, 16758644852]

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

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