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.

A271222 One of the two successive approximations up to 3^n for the 3-adic integer sqrt(-2). These are the numbers congruent to 2 mod 3 (except for the initial 0).

Table of values

n a(n)
0 0
1 2
2 5
3 5
4 59
5 221
6 221
7 1679
8 3866
9 16988
10 56354
11 174452
12 174452
13 705893
14 705893
15 10271831
16 24620738
17 110714180
18 239854343
19 627274832
20 2951797766
21 2951797766
22 2951797766
23 65713916984
24 159857095811
25 442286632292

List of values

[0, 2, 5, 5, 59, 221, 221, 1679, 3866, 16988, 56354, 174452, 174452, 705893, 705893, 10271831, 24620738, 110714180, 239854343, 627274832, 2951797766, 2951797766, 2951797766, 65713916984, 159857095811, 442286632292]

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

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