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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
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..6.
CROSSREFS
Cf.
A112389
,
A123762
-
A123827
,
A123829
-
A123849
.
Sequence in context:
A016793
A215045
A219343
*
A264057
A221659
A222053
Adjacent sequences:
A123799
A123800
A123801
*
A123803
A123804
A123805
KEYWORD
nonn
,
hard
AUTHOR
Søren Eilers
, Oct 29 2006
STATUS
approved
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Last modified May 4 12:19 EDT 2024. Contains 372243 sequences. (Running on oeis4.)