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Search: id:A051945
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| 1, 6, 22, 80, 294, 1092, 4092, 15444, 58630, 223652, 856596, 3292016, 12688732, 49031400, 189885240, 736808220, 2863971270, 11149451940, 43465121700, 169657266240, 662976162420
(list; graph; listen)
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OFFSET
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0,2
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REFERENCES
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A. H. Beiler, Recreations in the Theory of Numbers, Dover, N.Y., 1964, pp. 194-196.
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CROSSREFS
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Cf. A016813, A000108, and A051924.
Sequence in context: A027992 A032195 A111566 this_sequence A003699 A047124 A046365
Adjacent sequences: A051942 A051943 A051944 this_sequence A051946 A051947 A051948
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KEYWORD
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easy,nonn
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AUTHOR
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Barry E. Williams, Dec 20 1999
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Search completed in 0.002 seconds
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