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A249304 Number of zeros in row n of triangle A249133. 6
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, 37, 31, 33, 35, 29, 15, 31, 61, 61, 59, 61, 63, 61, 55, 61, 71, 69, 63, 65, 67, 61, 47, 61, 87, 85, 79, 81, 83, 77, 63, 73, 91, 85, 71, 73, 75, 61, 31, 63, 125, 125 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,5
COMMENTS
a(n) = (number of even terms in row n of triangle A249095) = A023416(A249184(n)) = A055641(A249183(n)).
LINKS
FORMULA
a(n) = A048967(n) + A048967(n-1) for n > 0.
MATHEMATICA
Join[{0}, Plus @@@ Partition[Table[n + 1 - 2^DigitCount[n, 2, 1], {n, 0, 100}], 2, 1]] (* Amiram Eldar, Jul 28 2023 *)
PROG
(Haskell)
a249304 n = if n == 0 then 0 else a048967 n + a048967 (n - 1)
CROSSREFS
Sequence in context: A282177 A184593 A328154 * A333906 A306224 A189202
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Nov 14 2014
STATUS
approved

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Last modified June 16 07:19 EDT 2024. Contains 373423 sequences. (Running on oeis4.)