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.

A255570 Numbers whose binary representation traces a closed 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
5 380
6 381
7 386
8 387
9 1056
10 1057
11 1090
12 1091
13 1156
14 1157
15 1274
16 1275
17 1286
18 1287
19 1288
20 1289
21 1518
22 1519
23 1552
24 1553
25 1782
26 1783
27 1784
28 1785
29 1796
30 1797
31 1914
32 1915
33 1980
34 1981
35 2014
36 2015
37 4096
38 4097
39 4158
40 4159
41 4160
42 4161
43 4222
44 4223
45 4348
46 4349
47 4368
48 4369
49 4598
50 4599
51 4600

List of values

[1, 64, 65, 126, 127, 380, 381, 386, 387, 1056, 1057, 1090, 1091, 1156, 1157, 1274, 1275, 1286, 1287, 1288, 1289, 1518, 1519, 1552, 1553, 1782, 1783, 1784, 1785, 1796, 1797, 1914, 1915, 1980, 1981, 2014, 2015, 4096, 4097, 4158, 4159, 4160, 4161, 4222, 4223, 4348, 4349, 4368, 4369, 4598, 4599, 4600]