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.

A137823 Numbers occurring in A137822 : first differences of numbers n such that 3 | sum( Catalan(k), k=1..2n).

Table of values

n a(n)
1 1
2 2
3 3
4 7
5 8
6 21
7 61
8 62
9 183
10 547
11 548
12 1641
13 4921
14 4922
15 14763
16 44287
17 44288
18 132861
19 398581
20 398582
21 1195743
22 3587227
23 3587228
24 10761681
25 32285041
26 32285042
27 96855123
28 290565367
29 290565368
30 871696101
31 2615088301
32 2615088302

List of values

[1, 2, 3, 7, 8, 21, 61, 62, 183, 547, 548, 1641, 4921, 4922, 14763, 44287, 44288, 132861, 398581, 398582, 1195743, 3587227, 3587228, 10761681, 32285041, 32285042, 96855123, 290565367, 290565368, 871696101, 2615088301, 2615088302]

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

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