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.

A108661 Square loops: the number of circular permutations (reversals not counted as different) of the numbers 0 to n such that the sum of any two consecutive numbers is a square.

Table of values

n a(n)
31 6
32 3
33 3
34 72
35 226
36 358
37 309
38 391
39 547
40 813
41 3562
42 10741
43 36633
44 94547
45 120424
46 393670
47 676579
48 1088429
49 5531195
50 3294327
51 8335128
52 27820643
53 75288569
54 111875702
55 264015370
56 465407197
57 687532936
58 1109951444
59 3256360099

List of values

[6, 3, 3, 72, 226, 358, 309, 391, 547, 813, 3562, 10741, 36633, 94547, 120424, 393670, 676579, 1088429, 5531195, 3294327, 8335128, 27820643, 75288569, 111875702, 264015370, 465407197, 687532936, 1109951444, 3256360099]

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

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