1,2
J. H. Conway, pp. 327-343 of Groups, Difference Sets and the Monster, de Gruyter, 1996.
Sequence in context: A036840 A159913 A030316 this_sequence A145501 A092693 A134661
Adjacent sequences: A034254 A034255 A034256 this_sequence A034258 A034259 A034260
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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