A261366 a(n) = number of even terms in row n of triangle A261363.

0, 1, 1, 2, 1, 4, 3, 4, 1, 8, 7, 8, 5, 10, 7, 8, 1, 16, 15, 16, 13, 18, 15, 16, 9, 22, 19, 20, 13, 22, 15, 16, 1, 32, 31, 32, 29, 34, 31, 32, 25, 38, 35, 36, 29, 38, 31, 32, 17, 46, 43, 44, 37, 46, 39, 40, 25, 50, 43, 44, 29, 46, 31, 32, 1, 64, 63, 64, 61

Offset

0,4

Comments

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

Links

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

Prog

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

Crossrefs

Cf. A261363, A001316.

Sequence in context: A102916 A081234 A105239 * A283166 A130973 A093779

Adjacent sequences: A261363 A261364 A261365 * A261367 A261368 A261369

Keyword

nonn

Author

Reinhard Zumkeller, Aug 16 2015

Status

approved