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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.

A187734 a(n) is the number of n-walks between the vertices 1 and 3 of the Graph on the chalkboard in 'Good Will Hunting', (1997).

Table of values

n a(n)
1 0
2 2
3 2
4 14
5 18
6 94
7 146
8 638
9 1138
10 4382
11 8658
12 30398
13 64818
14 212574
15 479890
16 1496062
17 3525106
18 10581918
19 25748306
20 75139390
21 187301554
22 535144670
23 1358396434
24 3820058238
25 9829858162
26 27316621854
27 71015537874
28 195595836350
29 512422576178
30 1401935442782

List of values

[0, 2, 2, 14, 18, 94, 146, 638, 1138, 4382, 8658, 30398, 64818, 212574, 479890, 1496062, 3525106, 10581918, 25748306, 75139390, 187301554, 535144670, 1358396434, 3820058238, 9829858162, 27316621854, 71015537874, 195595836350, 512422576178, 1401935442782]

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

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