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.

A129345 a(2n) = A001542(n+1), a(2n+1) = A038761(n+1); a Pellian-related sequence.

Table of values

n a(n)
0 2
1 9
2 12
3 53
4 70
5 309
6 408
7 1801
8 2378
9 10497
10 13860
11 61181
12 80782
13 356589
14 470832
15 2078353
16 2744210
17 12113529
18 15994428
19 70602821
20 93222358
21 411503397
22 543339720
23 2398417561
24 3166815962
25 13979001969
26 18457556052
27 81475594253
28 107578520350
29 474874563549

List of values

[2, 9, 12, 53, 70, 309, 408, 1801, 2378, 10497, 13860, 61181, 80782, 356589, 470832, 2078353, 2744210, 12113529, 15994428, 70602821, 93222358, 411503397, 543339720, 2398417561, 3166815962, 13979001969, 18457556052, 81475594253, 107578520350, 474874563549]

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

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