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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.

A051033 a(n) = binomial(n, floor(n/3)).

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 4
5 5
6 15
7 21
8 28
9 84
10 120
11 165
12 495
13 715
14 1001
15 3003
16 4368
17 6188
18 18564
19 27132
20 38760
21 116280
22 170544
23 245157
24 735471
25 1081575
26 1562275
27 4686825
28 6906900
29 10015005
30 30045015
31 44352165
32 64512240
33 193536720
34 286097760
35 417225900
36 1251677700

List of values

[1, 1, 1, 3, 4, 5, 15, 21, 28, 84, 120, 165, 495, 715, 1001, 3003, 4368, 6188, 18564, 27132, 38760, 116280, 170544, 245157, 735471, 1081575, 1562275, 4686825, 6906900, 10015005, 30045015, 44352165, 64512240, 193536720, 286097760, 417225900, 1251677700]

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

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