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.

A285115 Row sums of A285118: a(n) = Sum_{k=1..(n-1)} (C(n-1,k-1) bitwise-and C(n-1,k)), a(0) = a(1) = 0.

Table of values

n a(n)
0 0
1 0
2 1
3 0
4 5
5 8
6 12
7 20
8 49
9 64
10 304
11 672
12 1204
13 2648
14 3852
15 9320
16 18297
17 32960
18 75472
19 146392
20 304920
21 577336
22 1211144
23 2034072
24 4801892
25 7637392
26 18795944
27 33811680
28 71566612
29 139144320
30 285508328
31 569229920
32 1069209737
33 2314296064
34 4167725024
35 8567738280
36 16894013736
37 33135107200
38 68279466472
39 121133055024

List of values

[0, 0, 1, 0, 5, 8, 12, 20, 49, 64, 304, 672, 1204, 2648, 3852, 9320, 18297, 32960, 75472, 146392, 304920, 577336, 1211144, 2034072, 4801892, 7637392, 18795944, 33811680, 71566612, 139144320, 285508328, 569229920, 1069209737, 2314296064, 4167725024, 8567738280, 16894013736, 33135107200, 68279466472, 121133055024]

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

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