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.

A213722 a(n) = number of terms in A213717 whose magnitude is in range [(2^n)-1,(2^(n+1))-2] (or equally, in range [(2^n),(2^(n+1))-1]).

Table of values

n a(n)
0 0
1 0
2 0
3 1
4 3
5 7
6 15
7 34
8 74
9 158
10 333
11 694
12 1434
13 2946
14 6030
15 12312
16 25090
17 51040
18 103654
19 210165
20 425488
21 860267
22 1737263
23 3504655
24 7063602
25 14225185
26 28627843
27 57579313

List of values

[0, 0, 0, 1, 3, 7, 15, 34, 74, 158, 333, 694, 1434, 2946, 6030, 12312, 25090, 51040, 103654, 210165, 425488, 860267, 1737263, 3504655, 7063602, 14225185, 28627843, 57579313]