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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.

A266699 Coefficient of x^2 in minimal polynomial of the continued fraction [1^n,1/2,1,1,1,...], where 1^n means n ones.

Table of values

n a(n)
0 4
1 5
2 1
3 16
4 29
5 89
6 220
7 589
8 1529
9 4016
10 10501
11 27505
12 71996
13 188501
14 493489
15 1291984
16 3382445
17 8855369
18 23183644
19 60695581
20 158903081
21 416013680
22 1089137941
23 2851400161
24 7465062524
25 19543787429
26 51166299745
27 133955111824
28 350699035709
29 918141995321

List of values

[4, 5, 1, 16, 29, 89, 220, 589, 1529, 4016, 10501, 27505, 71996, 188501, 493489, 1291984, 3382445, 8855369, 23183644, 60695581, 158903081, 416013680, 1089137941, 2851400161, 7465062524, 19543787429, 51166299745, 133955111824, 350699035709, 918141995321]

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

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