A194186 - OEIS

A194186

a(n) = A193507(n) - A080359(n).

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 18, 12, 0, 0, 0, 0, 36, 34, 0, 0, 0, 0, 0, 0, 18, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 48, 0, 0, 0, 0, 0, 0, 24, 0, 0, 0, 0, 0, 36, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 30, 0, 0, 0, 0, 16, 0, 0, 0, 12, 0, 0, 0, 0, 0

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OFFSET

1,14

COMMENTS

Conjecture: The sequence is unbounded.

Records are 0, 18, 36, 48, 52, ... with indices 1, 14, 20, 44, 96, ...

The places of nonzero terms correspond to places of those terms of A193507 which are in A164294. Conjecture: The asymptotic density of nonzero terms is 2/(e^2+1). A heuristic proof follows from the comment to A193507 and the first reference there.

LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..1000

CROSSREFS

Cf. A193507, A080359, A104272, A194184.

Sequence in context: A195929 A247604 A194659 * A033668 A030239 A040308

Adjacent sequences: A194183 A194184 A194185 * A194187 A194188 A194189

KEYWORD

nonn

AUTHOR

Vladimir Shevelev, Aug 18 2011

STATUS

approved