Number of n-step self-avoiding walks on 4-d cubic lattice.
see also http://www.research.att.com/projects/OEIS?Anum=A010575 ,
which gives 8* the entries in this table.

Last update: Oct 19, 2004

2 7
3 49
4 337
5 2323
6 15895
7 108907
8 743275
9 5076727
10 34593817
11 235848025
12 1605431161
13 10932074707
14 74359524127
15 505919033077 (2 days CPU time on a Digital Alphastation 500 MHz)
16 3439312212373 ( 11.5 days CPU time on Digital Alphastation)
17 23385464090653 (16.5 days CPU time on an 1.5GHz Intel Itanium 2) 

Hugo Pfoertner
http://www.pfoertner.org/