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A143234 2^(-n)*A004003(n) (mod 32). 0
1, 3, 29, 5, 5, 7, 25, 9, 9, 11, 21, 13, 13, 15, 17, 17, 17, 19, 13, 21, 21, 23, 9, 25, 25, 27, 5, 29, 29, 31, 1, 1, 1, 3, 29, 5, 5, 7, 25, 9, 9, 11, 21, 13, 13, 15, 17, 17, 17, 19, 13, 21, 21, 23, 9, 25, 25, 27, 5, 29, 29, 31, 1, 1, 1, 3, 29, 5, 5, 7, 25, 9, 9, 11, 21, 13, 13, 15, 17 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

LINKS

Eric Weisstein's World of Mathematics, Domino Tiling

MATHEMATICA

Mod[If[Mod[n, 2] == 0, n + 1, (-1)^((n - 1)/2)], 32]

CROSSREFS

Cf. A004003.

Sequence in context: A119156 A175979 A096621 * A071195 A030274 A194392

Adjacent sequences:  A143231 A143232 A143233 * A143235 A143236 A143237

KEYWORD

nonn

AUTHOR

E. W. Weisstein (eric(AT)weisstein.com), Jul 31, 2008

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Last modified February 14 11:36 EST 2012. Contains 205623 sequences.