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 A194659 A104272(n) - A194658(n). 7
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 18, 12, 0, 0, 0, 0, 36, 32, 0, 0, 0, 0, 0, 0, 24, 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, 18, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0, 34, 0, 0, 0, 0, 0, 0, 0, 0, 0, 48, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 30, 0, 0, 0, 0, 0, 0, 0, 0, 0, 44, 40 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,13 COMMENTS Conjecture 1. The sequence is unbounded. Records are 0, 18, 36, 48, ... with indices 1, 13, 19,  43, ... . The places of nonzero terms correspond to places of those terms of A194658 which are in A164288. Moreover, for n>=1, places of nonzero terms of A194659 and A194186(n+1) coincide. This means that these sequences have the same lengths of the series of zeros. Conjecture 2. The asymptotic density of nonzero terms is 2/(e^2+1). LINKS CROSSREFS Cf. A104272, A194658, A194186, A164288 Sequence in context: A195926 A195929 A247604 * A194186 A033668 A030239 Adjacent sequences:  A194656 A194657 A194658 * A194660 A194661 A194662 KEYWORD nonn AUTHOR Vladimir Shevelev, Sep 01 2011 STATUS approved

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