login
A123802
Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1x7.
0
1, 32, 3292, 401408, 53855801, 7664347918
OFFSET
1,2
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
Søren Eilers, Oct 29 2006
STATUS
approved