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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.

A177794 G.f. A satisfies -x+(1+x^3-x)*A+(x^4-x^2)*A^2+(x^5-x^3)*A^3-x^4*A^4 = 0.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 2
6 4
7 8
8 16
9 33
10 69
11 145
12 306
13 651
14 1398
15 3026
16 6590
17 14425
18 31720
19 70040
20 155229
21 345193
22 770002
23 1722487
24 3863274
25 8685608
26 19570860
27 44188976
28 99965361
29 226548082
30 514275345
31 1169255837
32 2662319778
33 6070294053
34 13858727891
35 31678845485

List of values

[1, 1, 1, 1, 2, 4, 8, 16, 33, 69, 145, 306, 651, 1398, 3026, 6590, 14425, 31720, 70040, 155229, 345193, 770002, 1722487, 3863274, 8685608, 19570860, 44188976, 99965361, 226548082, 514275345, 1169255837, 2662319778, 6070294053, 13858727891, 31678845485]

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

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