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| A260439
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Column index to A255551: a(1) = 0; for n > 1: if n is Lucky number then a(n) = 1, otherwise for a(2k) = k, and for odd unlucky numbers, a(n) = 1 + the position at the stage where n is removed in the Lucky sieve.
(history;
published version)
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#16 by N. J. A. Sloane at Sun Aug 02 17:53:45 EDT 2015
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#15 by Antti Karttunen at Sun Aug 02 02:02:22 EDT 2015
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#14 by Antti Karttunen at Sun Aug 02 01:46:22 EDT 2015
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#13 by Antti Karttunen at Sun Aug 02 01:41:08 EDT 2015
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| FORMULA
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a(n) = A260437(n+1).
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| CROSSREFS
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One more than A260437.
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| STATUS
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proposed
editing
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#12 by Antti Karttunen at Fri Jul 31 07:54:58 EDT 2015
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#11 by Antti Karttunen at Fri Jul 31 07:47:26 EDT 2015
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| CROSSREFS
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Cf. (a variant).
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#10 by Antti Karttunen at Fri Jul 31 07:46:46 EDT 2015
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#9 by Antti Karttunen at Fri Jul 31 07:34:48 EDT 2015
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#8 by Antti Karttunen at Fri Jul 31 07:29:46 EDT 2015
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| NAME
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Column index to A255551: a(1) = 0; for n > 1: if n is Lucky number then a(n) = 1, otherwise for even n = 2k, a(n2k) = k, and for odd unlucky numbers, a(n) = 1 + the position at the stage where n is removed in the Lucky sieve.
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#7 by Antti Karttunen at Fri Jul 31 07:28:44 EDT 2015
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| NAME
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Column index to A255551: a(1) = 0; for n > 1: if n is Lucky number > 1, then a(n) = 1, otherwise for even n = 2k, a(n) = k, and for odd unlucky numbers, a(n) = 1 + the position at the stage where n is removed in the Lucky sieve.
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| CROSSREFS
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Cf. A000959, A050505, A145649, A255543, A255551.
Cf. A260739. (a variant).
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