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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.

A244360 Total number of toothpicks after n-th stage in the toothpick structure of the symmetric representation of half sigma in the first octant (without the axis x and without the main diagonal).

Table of values

n a(n)
1 1
2 3
3 6
4 10
5 14
6 20
7 25
8 33
9 41
10 51
11 58
12 70
13 78
14 91
15 104
16 120
17 130
18 148
19 159
20 179
21 197
22 216
23 229
24 253
25 270
26 292
27 314
28 342

List of values

[1, 3, 6, 10, 14, 20, 25, 33, 41, 51, 58, 70, 78, 91, 104, 120, 130, 148, 159, 179, 197, 216, 229, 253, 270, 292, 314, 342]

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

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