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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.

A081555 a(n) = 6*a(n-1) - a(n-2) - 4, a(0)=3, a(1)=7.

Table of values

n a(n)
0 3
1 7
2 35
3 199
4 1155
5 6727
6 39203
7 228487
8 1331715
9 7761799
10 45239075
11 263672647
12 1536796803
13 8957108167
14 52205852195
15 304278004999
16 1773462177795
17 10336495061767
18 60245508192803
19 351136554095047
20 2046573816377475
21 11928306344169799
22 69523264248641315

List of values

[3, 7, 35, 199, 1155, 6727, 39203, 228487, 1331715, 7761799, 45239075, 263672647, 1536796803, 8957108167, 52205852195, 304278004999, 1773462177795, 10336495061767, 60245508192803, 351136554095047, 2046573816377475, 11928306344169799, 69523264248641315]

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

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