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 A102046 Smallest positive integer greater than a(n - 1) consistent with the condition that n is a member of the sequence if and only if a(n) is congruent to (n!)!. 0
 1, 1, 2, 6, 7, 8, 720, 721, 722, 723, 724, 726, 727, 728, 729, 780, 781, 782, 783, 784, 785, 786, 787, 789, 790, 791, 792, 793, 794, 795, 796, 797, 798, 799, 780, 781, 782, 783, 784, 785, 786, 787, 788, 789, 790, 791, 792, 793, 794, 795, 796, 797, 798, 799 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS The sequence is related to the fake even and fake odd sequences and also the factorial and double factorial sequences, so seems in the short run linear but in the long run exponential. LINKS FORMULA a(a(n)) = (n!)! EXAMPLE a(6) = 720 because (3!)! = 6! = 720 CROSSREFS Cf. A080591, A080588, A000197, A000142. Sequence in context: A196747 A261691 A296443 * A019913 A299421 A327181 Adjacent sequences:  A102043 A102044 A102045 * A102047 A102048 A102049 KEYWORD easy,nonn,obsc AUTHOR Michael Joseph Halm, Feb 12 2005 EXTENSIONS The definition does not match the data. How was this sequence generated? - N. J. A. Sloane, Feb 21 2021 STATUS approved

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Last modified September 25 20:01 EDT 2021. Contains 347659 sequences. (Running on oeis4.)