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.

A037521 Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 2, 1, 0.

Table of values

n a(n)
1 2
2 9
3 36
4 146
5 585
6 2340
7 9362
8 37449
9 149796
10 599186
11 2396745
12 9586980
13 38347922
14 153391689
15 613566756
16 2454267026
17 9817068105
18 39268272420
19 157073089682
20 628292358729
21 2513169434916
22 10052677739666
23 40210710958665

List of values

[2, 9, 36, 146, 585, 2340, 9362, 37449, 149796, 599186, 2396745, 9586980, 38347922, 153391689, 613566756, 2454267026, 9817068105, 39268272420, 157073089682, 628292358729, 2513169434916, 10052677739666, 40210710958665]

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

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