id:A102046 - OEIS Search Results

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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, 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; listen)

	OFFSET	`0,3`
	COMMENT	`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.`
	FORMULA	`a(a(n)) = (n!)!`
	EXAMPLE	`a(6) = 720 because (3!)! = 6! = 720`
	CROSSREFS	`Cf. A080591, A080588, A000197, A000142.` `Sequence in context: A026311 A063291 A088225 this_sequence A019913 A047554 A079335` `Adjacent sequences: A102043 A102044 A102045 this_sequence A102047 A102048 A102049`
	KEYWORD	`easy,nonn`
	AUTHOR	`Michael Joseph Halm (hierogamous(AT)lycos.com), Feb 12 2005`

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Last modified November 30 22:12 EST 2008. Contains 150989 sequences.

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