0,4

For n > 0: a(n) = n + 1 - A001316(n-1).

Reinhard Zumkeller, Table of n, a(n) for n = 0..10000

(Haskell)

a261366 = sum . map ((1 -) . flip mod 2) . a261363_row

Cf. A261363, A001316.

Sequence in context: A102916 A081234 A105239 * A283166 A130973 A093779

Adjacent sequences: A261363 A261364 A261365 * A261367 A261368 A261369

nonn

Reinhard Zumkeller, Aug 16 2015

approved