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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.

A339984 G.f.: g(x) * g(x^2), where g(x) is the g.f. of A000081.

Table of values

n a(n)
0 0
1 0
2 0
3 1
4 1
5 3
6 5
7 13
8 26
9 65
10 147
11 369
12 899
13 2298
14 5851
15 15261
16 39945
17 105948
18 282504
19 759480
20 2052027
21 5576017
22 15216998
23 41705762
24 114715503
25 316611401
26 876466003
27 2433091773
28 6771462322
29 18889829555
30 52809592990
31 147935027381
32 415182991401
33 1167251435240

List of values

[0, 0, 0, 1, 1, 3, 5, 13, 26, 65, 147, 369, 899, 2298, 5851, 15261, 39945, 105948, 282504, 759480, 2052027, 5576017, 15216998, 41705762, 114715503, 316611401, 876466003, 2433091773, 6771462322, 18889829555, 52809592990, 147935027381, 415182991401, 1167251435240]

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

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