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.

A234933 The number of binary sequences that contain at least two consecutive 1's and contain at least two consecutive 0's.

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 2
5 8
6 24
7 62
8 148
9 336
10 738
11 1584
12 3344
13 6974
14 14412
15 29576
16 60370
17 122712
18 248616
19 502398
20 1013156
21 2039840
22 4101570
23 8238560
24 16534432
25 33161598
26 66473244
27 133189272
28 266771378
29 534178376
30 1069385208
31 2140434494
32 4283561524
33 8571479664
34 17150008482
35 34311422736
36 68641300400

List of values

[0, 0, 0, 0, 2, 8, 24, 62, 148, 336, 738, 1584, 3344, 6974, 14412, 29576, 60370, 122712, 248616, 502398, 1013156, 2039840, 4101570, 8238560, 16534432, 33161598, 66473244, 133189272, 266771378, 534178376, 1069385208, 2140434494, 4283561524, 8571479664, 17150008482, 34311422736, 68641300400]

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

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