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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.

A346575 a(n) is the number of 6-tuples (a_1,a_2,a_3,a_4,a_5,a_6) having all terms in {1,...,n} such that there exists a tetrahedron ABCD with those edge-lengths.

Table of values

n a(n)
0 0
1 1
2 43
3 327
4 1792
5 6139
6 17607
7 43291
8 96142
9 193149
10 362383
11 638533
12 1075110
13 1733023
14 2700217
15 4076133
16 5994310
17 8611819
18 12119139
19 16738861
20 22746004
21 30449013
22 40212679
23 52452031
24 67651170
25 86348035
26 109166881
27 136796079
28 170024038
29 209707144
30 256814946
31 312433795

List of values

[0, 1, 43, 327, 1792, 6139, 17607, 43291, 96142, 193149, 362383, 638533, 1075110, 1733023, 2700217, 4076133, 5994310, 8611819, 12119139, 16738861, 22746004, 30449013, 40212679, 52452031, 67651170, 86348035, 109166881, 136796079, 170024038, 209707144, 256814946, 312433795]

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

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