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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.

A261473 Number of binary strings of length n+6 such that the smallest number whose binary representation is not visible in the string is 8.

Table of values

n a(n)
0 0
1 2
2 10
3 40
4 116
5 296
6 699
7 1557
8 3325
9 6893
10 13964
11 27789
12 54536
13 105854
14 203645
15 388970
16 738596
17 1395718
18 2626914
19 4927664
20 9217604
21 17201570
22 32036763
23 59564873
24 110586325
25 205056292
26 379823379
27 702897160
28 1299744979
29 2401747773
30 4435467036
31 8187063102

List of values

[0, 2, 10, 40, 116, 296, 699, 1557, 3325, 6893, 13964, 27789, 54536, 105854, 203645, 388970, 738596, 1395718, 2626914, 4927664, 9217604, 17201570, 32036763, 59564873, 110586325, 205056292, 379823379, 702897160, 1299744979, 2401747773, 4435467036, 8187063102]

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

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