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.

A212105 Number of (w,x,y,z) with all terms in {1,...,n} and w > harmonic mean of {x,y,z}.

Table of values

n a(n)
0 0
1 0
2 7
3 45
4 150
5 373
6 768
7 1437
8 2479
9 4002
10 6120
11 9010
12 12786
13 17661
14 23821
15 31464
16 40809
17 52102
18 65577
19 81531
20 100201
21 121911
22 146979
23 175717
24 208434
25 245550
26 287401
27 334380
28 386877
29 445366
30 510222
31 581922
32 660952
33 747750
34 842850

List of values

[0, 0, 7, 45, 150, 373, 768, 1437, 2479, 4002, 6120, 9010, 12786, 17661, 23821, 31464, 40809, 52102, 65577, 81531, 100201, 121911, 146979, 175717, 208434, 245550, 287401, 334380, 386877, 445366, 510222, 581922, 660952, 747750, 842850]

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

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