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.

A285114 Row sums of A285117: a(n) = 2 + Sum_{k=1..(n-1)} C(n-1,k-1) XOR C(n-1,k), a(0) = 1, a(1) = 2.

Table of values

n a(n)
0 1
1 2
2 2
3 8
4 6
5 16
6 40
7 88
8 158
9 384
10 416
11 704
12 1688
13 2896
14 8680
15 14128
16 28942
17 65152
18 111200
19 231504
20 438736
21 942480
22 1772016
23 4320464
24 7173432
25 18279648
26 29516976
27 66594368
28 125302232
29 258582272
30 502725168
31 1009023808
32 2156547822
33 3961342464
34 8844419136
35 17224261808
36 34931449264
37 71168739072
38 138318974000
39 307489703840

List of values

[1, 2, 2, 8, 6, 16, 40, 88, 158, 384, 416, 704, 1688, 2896, 8680, 14128, 28942, 65152, 111200, 231504, 438736, 942480, 1772016, 4320464, 7173432, 18279648, 29516976, 66594368, 125302232, 258582272, 502725168, 1009023808, 2156547822, 3961342464, 8844419136, 17224261808, 34931449264, 71168739072, 138318974000, 307489703840]

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

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