

A145015


Run lengths in A037861 having the same sign.


0



1, 3, 1, 3, 3, 5, 3, 1, 1, 3, 1, 7, 7, 1, 3, 5, 3, 13, 7, 1, 3, 1, 1, 3, 3, 1, 1, 3, 1, 7, 3, 1, 1, 3, 1, 7, 1, 15, 15, 1, 7, 1, 3, 5, 7, 1, 3, 5, 3, 13, 7, 1, 3, 5, 3, 13, 3, 29, 15, 1, 7, 1, 3, 1, 1, 3, 7, 1, 3, 1, 1, 3, 3, 1, 1, 3, 1, 7, 7, 1, 3, 1, 1, 3, 3, 1, 1, 3, 1, 7, 3, 1, 1, 3, 1, 7, 1, 15, 7, 1
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OFFSET

0,2


COMMENTS

a(n) seems (conjecture) to contain only the numbers 2^n  1 (for n>=1) and 2^n  3 (for n>=3)


LINKS

Table of n, a(n) for n=0..99.


EXAMPLE

A037861 is: 1,1,0,2,1,1,1,3,2,0,0,2,0,2,2,4,3, ... so sign is +,,0,,+,,,,+,0,0,,0,,,,+, ... thus sequence is 1,3,1,3,3,5, ...


CROSSREFS

Cf. A037861.
Sequence in context: A029153 A060241 A332003 * A085723 A186422 A165027
Adjacent sequences: A145012 A145013 A145014 * A145016 A145017 A145018


KEYWORD

base,nonn


AUTHOR

Denis Boigelot (dboigelo(AT)ulb.ac.be), Sep 29 2008


STATUS

approved



