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Search: id:A076021
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A076021 Number of fully idempotent systems with n elements having with one binary operation satisfying the equation B(AB)=A (semisymmetric quasigroups). +0
6
1, 0, 1, 1, 0, 0, 4, 0, 20 (list; graph; listen)
OFFSET

1,7
CROSSREFS

Cf. A076016-A076020.

Sequence in context: A167350 A156457 A085618 this_sequence A078630 A057402 A123016

Adjacent sequences: A076018 A076019 A076020 this_sequence A076022 A076023 A076024

KEYWORD

nonn

AUTHOR

Richard Schroeppel (rschroe(AT)sandia.gov), Oct 29 2002

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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.

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