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A054962 Number of different solutions to problem in A054961. 2
1, 1, 1, 1, 1, 13, 120, 1680, 4200, 181440 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,6
REFERENCES
Initial terms computed by Michael B. Greenwald (mbgreen(AT)central.cis.upenn.edu), May 24 2000.
LINKS
CROSSREFS
Cf. A304041.
Sequence in context: A295048 A295376 A188709 * A297394 A014918 A081033
KEYWORD
nonn,hard,nice,more
AUTHOR
N. J. A. Sloane, May 24 2000
EXTENSIONS
a(8) from Giovanni Resta, Mar 30 2006
a(9) from Zhao Hui Du, Mar 29 2018
STATUS
approved

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Last modified April 13 09:03 EDT 2024. Contains 371638 sequences. (Running on oeis4.)