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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.

A306027 Number of length-n restricted growth strings (RGS) with growth <= three and first element in [3].

Table of values

n a(n)
0 1
1 3
2 15
3 95
4 717
5 6221
6 60619
7 652595
8 7667957
9 97415437
10 1328078067
11 19310628827
12 297932883437
13 4856255827013
14 83315165338923
15 1499606140412403
16 28237439054261893
17 554849548137840189
18 11351488777441797187
19 241314920928367232747
20 5320846918247724517117

List of values

[1, 3, 15, 95, 717, 6221, 60619, 652595, 7667957, 97415437, 1328078067, 19310628827, 297932883437, 4856255827013, 83315165338923, 1499606140412403, 28237439054261893, 554849548137840189, 11351488777441797187, 241314920928367232747, 5320846918247724517117]

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

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