A059295 2-boustrophedon transform (see A059294) of 1, 1, 1, 1, ...

1, 2, 5, 16, 69, 386, 2665, 21856, 207369, 2233346, 26910637, 358654640, 5238083085, 83187634306, 1427274447313, 26308754113344, 518495885082513, 10879652226044546, 242157991346605909, 5698578388375932368, 141364265347273219925, 3686958817004484491522

Offset

0,2

Links

Table of n, a(n) for n=0..21.

Crossrefs

Sequence in context: A220840 A058673 A296675 * A259408 A251684 A129092

Adjacent sequences: A059292 A059293 A059294 * A059296 A059297 A059298

Keyword

nonn

Author

N. J. A. Sloane, Jan 25 2001

Status

approved