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A247598 Number of nonisomorphic binary n X n matrices with five 1's per column under row and column permutations. 5
1, 11, 471, 122038, 85820809, 96018336018, 146662126879117, 291352421255114277, 734102568216405642199, 2304488853198195872625924, 8882860158091727486388086786, 41519759838668575020971562079517, 232748666229847254694256869145439898, 1549417862125158239133077344950011140191 (list; graph; refs; listen; history; text; internal format)
OFFSET
5,2
LINKS
MAPLE
seq(matrix_marks(n, 5), n=3..15); # Using the uploaded program to A247417
PROG
(PARI) \\ See A304942 for Blocks
a(n) = Blocks(n, n, 5); \\ Andrew Howroyd, May 24 2018
CROSSREFS
Column k=5 of A304942.
Sequence in context: A233219 A288685 A068235 * A303207 A266026 A156863
KEYWORD
nonn
AUTHOR
Marko Riedel, Sep 21 2014
EXTENSIONS
Terms a(16) and beyond from Andrew Howroyd, May 24 2018
STATUS
approved

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Last modified June 2 06:55 EDT 2023. Contains 363081 sequences. (Running on oeis4.)