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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.

A330079 Number of n-step self-avoiding walks starting at the origin that are restricted to the boundary walls of the first octant of the cubic lattice.

Table of values

n a(n)
0 1
1 3
2 9
3 27
4 75
5 213
6 585
7 1623
8 4425
9 12123
10 32883
11 89415
12 241557
13 653649
14 1760427
15 4747005
16 12754593
17 34301463
18 91990575
19 246880023
20 661075149
21 1771199169
22 4736741853
23 12673587057
24 33856816431
25 90482953989
26 241499070195
27 644781165933
28 1719559634451
29 4587222964881
30 12225165127887

List of values

[1, 3, 9, 27, 75, 213, 585, 1623, 4425, 12123, 32883, 89415, 241557, 653649, 1760427, 4747005, 12754593, 34301463, 91990575, 246880023, 661075149, 1771199169, 4736741853, 12673587057, 33856816431, 90482953989, 241499070195, 644781165933, 1719559634451, 4587222964881, 12225165127887]

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

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