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.

A255571 Numbers whose binary representation traces a nonselfcrossing circuit in honeycomb lattice when its bits (from the least to the second most significant bit) are interpreted as directions to proceed at each vertex. (The most significant 1-bit is ignored).

Table of values

n a(n)
0 1
1 64
2 65
3 126
4 127
5 1056
6 1057
7 1090
8 1091
9 1156
10 1157
11 1288
12 1289
13 1518
14 1519
15 1552
16 1553
17 1782
18 1783
19 1914
20 1915
21 1980
22 1981
23 2014
24 2015
25 4368
26 4369
27 4642
28 4643
29 5188
30 5189
31 6006
32 6007
33 6280
34 6281
35 7098
36 7099
37 7644
38 7645
39 7918
40 7919
41 16962
42 16963
43 17028
44 17029
45 17160
46 17161
47 17542
48 17543
49 17544
50 17545
51 17674
52 17675
53 17938
54 17939

List of values

[1, 64, 65, 126, 127, 1056, 1057, 1090, 1091, 1156, 1157, 1288, 1289, 1518, 1519, 1552, 1553, 1782, 1783, 1914, 1915, 1980, 1981, 2014, 2015, 4368, 4369, 4642, 4643, 5188, 5189, 6006, 6007, 6280, 6281, 7098, 7099, 7644, 7645, 7918, 7919, 16962, 16963, 17028, 17029, 17160, 17161, 17542, 17543, 17544, 17545, 17674, 17675, 17938, 17939]