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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.

A339852 Number of Hamiltonian circuits within parallelograms of size 5 X n on the triangular lattice.

Table of values

n a(n)
2 1
3 44
4 549
5 7104
6 104100
7 1475286
8 20842802
9 295671198
10 4190083085
11 59374628434
12 841470846944
13 11925007688342
14 168996943899738
15 2394974040514288
16 33940795571394262
17 480998063196253650
18 6816550836218124869
19 96601974078400509612
20 1369012239935377295854
21 19401203058253673198258

List of values

[1, 44, 549, 7104, 104100, 1475286, 20842802, 295671198, 4190083085, 59374628434, 841470846944, 11925007688342, 168996943899738, 2394974040514288, 33940795571394262, 480998063196253650, 6816550836218124869, 96601974078400509612, 1369012239935377295854, 19401203058253673198258]

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

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