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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.

A179533 Expansion of (1/(1-x-2x^2))*c(x/(1-x-2x^2)), c(x) the g.f. of A000108.

Table of values

n a(n)
0 1
1 2
2 7
3 23
4 85
5 332
6 1369
7 5870
8 25945
9 117374
10 540805
11 2528675
12 11966923
13 57206972
14 275824159
15 1339721519
16 6549093013
17 32195473406
18 159065828029
19 789395034701
20 3933239089903
21 19668745466636
22 98679891233803
23 496570499905832
24 2505670304785615
25 12675395921692394
26 64270076976110203
27 326580624341708693
28 1662796531746045157
29 8481930651824392268
30 43341418581113085697

List of values

[1, 2, 7, 23, 85, 332, 1369, 5870, 25945, 117374, 540805, 2528675, 11966923, 57206972, 275824159, 1339721519, 6549093013, 32195473406, 159065828029, 789395034701, 3933239089903, 19668745466636, 98679891233803, 496570499905832, 2505670304785615, 12675395921692394, 64270076976110203, 326580624341708693, 1662796531746045157, 8481930651824392268, 43341418581113085697]

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

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