cp's OEIS Frontend

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.

A255115 Number of n-length words on {0,1,2} in which 0 appears only in runs of length 2.

Table of values

n a(n)
0 1
1 2
2 5
3 12
4 28
5 66
6 156
7 368
8 868
9 2048
10 4832
11 11400
12 26896
13 63456
14 149712
15 353216
16 833344
17 1966112
18 4638656
19 10944000
20 25820224
21 60917760
22 143723520
23 339087488
24 800010496
25 1887468032
26 4453111040
27 10506243072
28 24787422208
29 58481066496
30 137974619136

List of values

[1, 2, 5, 12, 28, 66, 156, 368, 868, 2048, 4832, 11400, 26896, 63456, 149712, 353216, 833344, 1966112, 4638656, 10944000, 25820224, 60917760, 143723520, 339087488, 800010496, 1887468032, 4453111040, 10506243072, 24787422208, 58481066496, 137974619136]

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

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