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.

A139784 a(4n+1)=2a(4n), a(4n+2)=2a(4n+1), a(4n+3)=2a(4n+2), a(4n+4)=2a(4n+3)+A007583(n).

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 1
5 2
6 4
7 8
8 19
9 38
10 76
11 152
12 315
13 630
14 1260
15 2520
16 5083
17 10166
18 20332
19 40664
20 81499
21 162998
22 325996
23 651992
24 1304667
25 2609334
26 5218668
27 10437336
28 20877403
29 41754806
30 83509612
31 167019224
32 334049371
33 668098742
34 1336197484
35 2672394968

List of values

[0, 0, 0, 0, 1, 2, 4, 8, 19, 38, 76, 152, 315, 630, 1260, 2520, 5083, 10166, 20332, 40664, 81499, 162998, 325996, 651992, 1304667, 2609334, 5218668, 10437336, 20877403, 41754806, 83509612, 167019224, 334049371, 668098742, 1336197484, 2672394968]

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

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