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.

A127215 a(n) = 3^n*tribonacci(n) or (3^n)*A001644(n+1).

Table of values

n a(n)
1 3
2 27
3 189
4 891
5 5103
6 28431
7 155277
8 859491
9 4743603
10 26158707
11 144374805
12 796630059
13 4395548511
14 24254435799
15 133832255589
16 738466498755
17 4074759563139
18 22483948079115
19 124063275771981
20 684563868232731
21 3777327684782127
22 20842766314284447

List of values

[3, 27, 189, 891, 5103, 28431, 155277, 859491, 4743603, 26158707, 144374805, 796630059, 4395548511, 24254435799, 133832255589, 738466498755, 4074759563139, 22483948079115, 124063275771981, 684563868232731, 3777327684782127, 20842766314284447]

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

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