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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.

A266705 Coefficient of x^2 in minimal polynomial of the continued fraction [1^n,sqrt(5),1,1,1,...], where 1^n means n ones.

Table of values

n a(n)
0 1
1 11
2 11
3 45
4 101
5 281
6 719
7 1899
8 4955
9 12989
10 33989
11 89001
12 232991
13 609995
14 1596971
15 4180941
16 10945829
17 28656569
18 75023855
19 196415019
20 514221179
21 1346248541
22 3524524421
23 9227324745
24 24157449791
25 63245024651
26 165577624139
27 433487847789
28 1134885919205

List of values

[1, 11, 11, 45, 101, 281, 719, 1899, 4955, 12989, 33989, 89001, 232991, 609995, 1596971, 4180941, 10945829, 28656569, 75023855, 196415019, 514221179, 1346248541, 3524524421, 9227324745, 24157449791, 63245024651, 165577624139, 433487847789, 1134885919205]

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

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