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.

A189501 Number of arrangements of 5 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 12
2 136
3 928
4 3388
5 9394
6 22088
7 45892
8 86416
9 152136
10 251964
11 400562
12 608572
13 895302
14 1288110
15 1800136
16 2460254
17 3306706
18 4375254
19 5709802
20 7332744
21 9299616
22 11690792
23 14567750
24 17952362
25 21909788
26 26581910
27 32027018
28 38302012
29 45552824

List of values

[12, 136, 928, 3388, 9394, 22088, 45892, 86416, 152136, 251964, 400562, 608572, 895302, 1288110, 1800136, 2460254, 3306706, 4375254, 5709802, 7332744, 9299616, 11690792, 14567750, 17952362, 21909788, 26581910, 32027018, 38302012, 45552824]

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

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