1,2
J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 37, pp 14, Ellipses, Paris 2008.
Cf. A001694.
Sequence in context: A096349 A015061 A015037 this_sequence A063681 A087020 A023930
Adjacent sequences: A140743 A140744 A140745 this_sequence A140747 A140748 A140749
nonn
Lekraj Beedassy (blekraj(AT)yahoo.com), Jul 12 2008
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