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A156724 a(n)=A156253(2n)-A156251(2n) 0
1, 1, 1, 3, 3, 3, 3, 5, 5, 5, 7, 7, 9, 9, 9, 9, 11, 11, 13, 13, 13, 15, 15, 17, 17, 17, 17, 19, 19, 19, 21, 21, 21, 21, 23, 23, 25, 25, 27, 27, 27, 27, 27, 29, 29, 31, 31, 31, 31, 31, 33, 33, 35, 35, 37, 37, 37, 37, 39, 39, 39, 41, 41, 41, 43, 43, 43, 43, 45, 45, 45, 47, 47, 49, 49 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

a(n) is odd.

LINKS

Table of n, a(n) for n=1..75.

FORMULA

a(n) is expected to be asymptotic to 2n/3.

CROSSREFS

Sequence in context: A111756 A130821 A129756 * A196186 A075753 A006166

Adjacent sequences:  A156721 A156722 A156723 * A156725 A156726 A156727

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Feb 14 2009

STATUS

approved

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Last modified February 17 12:29 EST 2020. Contains 331996 sequences. (Running on oeis4.)