A143234 a(n) = (2^(-n)*A004003(n)) mod 32.

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

Offset

1,2

Links

Table of n, a(n) for n=1..79.

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: A175979 A096621 A362466 * A071195 A292625 A030274

Adjacent sequences: A143231 A143232 A143233 * A143235 A143236 A143237

Keyword

nonn

Author

Eric W. Weisstein, Jul 31 2008

Status

approved