A216176 - OEIS

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A216176

Inner product of the Zeckendorf binary representation of n and its reverse.

3

1, 0, 0, 2, 0, 2, 0, 0, 2, 0, 1, 3, 0, 2, 0, 0, 2, 0, 2, 0, 0, 2, 0, 0, 2, 1, 3, 1, 0, 2, 0, 2, 4, 0, 2, 0, 0, 2, 0, 2, 0, 0, 2, 0, 0, 2, 0, 2, 0, 2, 4, 0, 2, 0, 0, 2, 0, 0, 2, 0, 2, 0, 1, 3, 1, 1, 3, 0, 2, 0, 0, 2, 2, 4, 2, 0, 2, 0, 2, 4, 0, 2, 0, 1, 3, 1

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OFFSET

1,4

COMMENTS

a(n) = sum (A189920(n,k) * A213676(n,k): k = 1..A072649(n));

a(A027941(n)) = n.

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

PROG

(Haskell)

a216176 n = sum $ zipWith (*) zs $ reverse zs

where zs = a189920_row n

CROSSREFS

Sequence in context: A366533 A340683 A221645 * A359007 A128765 A193511

Adjacent sequences: A216173 A216174 A216175 * A216177 A216178 A216179

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Mar 10 2013

STATUS

approved