login
A123794
Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1x6.
0
1, 24, 1861, 168661, 16902651, 1797062518, 199090941069
OFFSET
1,2
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
Søren Eilers, Oct 29 2006
STATUS
approved