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.

A037604 Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,3.

Table of values

n a(n)
1 1
2 6
3 27
4 109
5 438
6 1755
7 7021
8 28086
9 112347
10 449389
11 1797558
12 7190235
13 28760941
14 115043766
15 460175067
16 1840700269
17 7362801078
18 29451204315
19 117804817261
20 471219269046
21 1884877076187
22 7539508304749
23 30158033218998

List of values

[1, 6, 27, 109, 438, 1755, 7021, 28086, 112347, 449389, 1797558, 7190235, 28760941, 115043766, 460175067, 1840700269, 7362801078, 29451204315, 117804817261, 471219269046, 1884877076187, 7539508304749, 30158033218998]

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

Content is available under The OEIS End-User License Agreement.