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.

A359709 Number of n-step self-avoiding walks on a 2D square lattice whose end-to-end distance is an integer.

Table of values

n a(n)
0 1
1 4
2 4
3 12
4 28
5 76
6 164
7 732
8 1044
9 4924
10 6724
11 30636
12 43972
13 190516
14 313996
15 1197908
16 2284260
17 7678188
18 16257604
19 50524252
20 113052396
21 341811828
22 773714436
23 2358452388
24 5245994292
25 16447462492
26 35395532236
27 115129727188
28 238542983748
29 804980005276

List of values

[1, 4, 4, 12, 28, 76, 164, 732, 1044, 4924, 6724, 30636, 43972, 190516, 313996, 1197908, 2284260, 7678188, 16257604, 50524252, 113052396, 341811828, 773714436, 2358452388, 5245994292, 16447462492, 35395532236, 115129727188, 238542983748, 804980005276]