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A156723 a(n)=A156253(n)-A156251(n) 0
0, 1, 0, 1, 0, 1, 2, 3, 2, 3, 4, 3, 4, 3, 4, 5, 4, 5, 4, 5, 6, 7, 6, 7, 8, 9, 8, 9, 8, 9, 10, 9, 10, 11, 12, 11, 12, 13, 12, 13, 12, 13, 14, 15, 14, 15, 16, 17, 16, 17, 18, 17, 18, 17, 18, 19, 18, 19, 18, 19, 20, 21, 20, 21, 22, 21, 22, 21, 22, 23, 22, 23, 24, 25, 24, 25, 26, 27, 26, 27 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

COMMENTS

a(2n) is odd, a(2n+1) is even.

LINKS

Table of n, a(n) for n=1..80.

FORMULA

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

CROSSREFS

Sequence in context: A324380 A123182 A069464 * A240834 A256993 A173523

Adjacent sequences:  A156720 A156721 A156722 * A156724 A156725 A156726

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Feb 14 2009

STATUS

approved

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Last modified August 1 13:17 EDT 2021. Contains 346391 sequences. (Running on oeis4.)