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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.

A354215 a(n) is the row number of the Trithoff (tribonacci) array where we can find the tail of the following sequence: apply the difference operator n times to the tribonacci sequence.

Table of values

n a(n)
0 1
1 2
2 3
3 7
4 19
5 29
6 81
7 125
8 353
9 161
10 1545
11 705
12 2001
13 3089
14 8769
15 24897
16 38433
17 109121
18 309825
19 478273
20 1357953
21 2096257
22 5951873
23 2715905

List of values

[1, 2, 3, 7, 19, 29, 81, 125, 353, 161, 1545, 705, 2001, 3089, 8769, 24897, 38433, 109121, 309825, 478273, 1357953, 2096257, 5951873, 2715905]

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

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