cp's OEIS Frontend

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.

A198636 One half of total number of round trips, each of length 2n, on the graph P_6 (o-o-o-o-o-o).

Table of values

n a(n)
0 3
1 5
2 13
3 38
4 117
5 370
6 1186
7 3827
8 12389
9 40169
10 130338
11 423065
12 1373466
13 4459278
14 14478659
15 47011093
16 152642789
17 495626046
18 1609284589
19 5225309458
20 16966465802
21 55089756851
22 178875298901
23 580804419201
24 1885860059450
25 6123349080945

List of values

[3, 5, 13, 38, 117, 370, 1186, 3827, 12389, 40169, 130338, 423065, 1373466, 4459278, 14478659, 47011093, 152642789, 495626046, 1609284589, 5225309458, 16966465802, 55089756851, 178875298901, 580804419201, 1885860059450, 6123349080945]

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

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