1,2

Conjecture: Every number is a member.

a(17) > 2500. - David Wasserman, May 12 2005

a(19) > 20000 if it exists. - Robert Israel, Dec 24 2015

Table of n, a(n) for n=1..18.

a(n) = Log th the base 2 of {A087356(n+1) - A087356(n)}.

a(5) = log to the base 2 of {A087356(6) - A087356(5)} = log{8209-17} = log (8192) to the base 2 = 13.

Cf. A087356.

Sequence in context: A075555 A075556 A257568 * A226062 A245610 A191705

Adjacent sequences: A087354 A087355 A087356 * A087358 A087359 A087360

nonn,more

Amarnath Murthy, Sep 08 2003

More terms from David Wasserman, May 12 2005

a(17) and a(18) from Robert Israel, Dec 24 2015

approved