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A123812 Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1 X 8 which is flat, i.e., with all blocks in parallel position. 0
1, 8, 145, 2884, 62517, 1404472, 32430749, 763219988, 18231473349 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
CROSSREFS
Sequence in context: A071305 A172150 A105046 * A064331 A230938 A351922
KEYWORD
nonn,hard
AUTHOR
Søren Eilers, Oct 29 2006
STATUS
approved

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Last modified May 26 02:10 EDT 2024. Contains 372807 sequences. (Running on oeis4.)