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A000745 Boustrophedon transform of squares. 3
1, 5, 18, 57, 180, 617, 2400, 10717, 54544, 312353, 1988104, 13921501, 106350816, 880162337, 7844596536, 74910367309, 763030711936, 8257927397569, 94628877364936, 1144609672707741, 14573622985067744 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 0..400

Peter Luschny, An old operation on sequences: the Seidel transform

J. Millar, N. J. A. Sloane and N. E. Young, A new operation on sequences: the Boustrophedon on transform, J. Combin. Theory, 17A 44-54 1996 (Abstract, pdf, ps).

N. J. A. Sloane, Transforms

Wikipedia, Boustrophedon_transform

Index entries for sequences related to boustrophedon transform

PROG

(Haskell)

a000745 n = sum $ zipWith (*) (a109449_row n) $ tail a000290_list

-- Reinhard Zumkeller, Nov 03 2013

CROSSREFS

Cf. A00290, A000697.

Sequence in context: A145129 A001793 A093374 * A128553 A190163 A235612

Adjacent sequences:  A000742 A000743 A000744 * A000746 A000747 A000748

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified April 17 17:56 EDT 2014. Contains 240655 sequences.