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A249304 Number of zeros in row n of triangle A249133. 6

%I #8 Jul 28 2023 04:05:42

%S 0,0,1,1,3,5,5,3,7,13,13,11,13,15,13,7,15,29,29,27,29,31,29,23,29,39,

%T 37,31,33,35,29,15,31,61,61,59,61,63,61,55,61,71,69,63,65,67,61,47,61,

%U 87,85,79,81,83,77,63,73,91,85,71,73,75,61,31,63,125,125

%N Number of zeros in row n of triangle A249133.

%C a(n) = (number of even terms in row n of triangle A249095) = A023416(A249184(n)) = A055641(A249183(n)).

%H Reinhard Zumkeller, <a href="/A249304/b249304.txt">Table of n, a(n) for n = 0..10000</a>

%F a(n) = A048967(n) + A048967(n-1) for n > 0.

%t Join[{0}, Plus @@@ Partition[Table[n + 1 - 2^DigitCount[n, 2, 1], {n, 0, 100}], 2, 1]] (* _Amiram Eldar_, Jul 28 2023 *)

%o (Haskell)

%o a249304 n = if n == 0 then 0 else a048967 n + a048967 (n - 1)

%Y Cf. A249133, A048967, A249095, A023416, A055641, A249183, A249184.

%K nonn

%O 0,5

%A _Reinhard Zumkeller_, Nov 14 2014

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Last modified April 16 07:57 EDT 2024. Contains 371698 sequences. (Running on oeis4.)