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A068471 Number of n X n binary matrices with each 1 having at most 2 adjacent 1's. 1
2, 16, 378, 30824, 8402216, 7664347268, 23371379782671, 238225926162821893, 8118262028301675826132, 924887563235974860108746534, 352261845112790535941917078458268 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
CROSSREFS
No adjacent 1's A006506, one adjacent 1 A067968.
Sequence in context: A366396 A015201 A227406 * A325287 A140308 A280723
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 10 2002
STATUS
approved

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Last modified August 29 05:11 EDT 2024. Contains 375510 sequences. (Running on oeis4.)