A066047 - OEIS

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A066047

Numbers n such that n divides A001045(n-1).

5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`The preponderance of entries are primes. The first which is not prime is 341.`
	MATHEMATICA	`a[0] = 0; a[1] = 1; a[n_] := a[n] = a[n - 1] + 2a[n - 2]; Select[ Range[500], IntegerQ[a[ # - 1]/# ] && # != 1 & ]`
	CROSSREFS	`Cf. A001045, A064739.` `Sequence in context: A171525 * A140475 A171577 A168546 A175212 A020626` `Adjacent sequences: A066044 A066045 A066046 * A066048 A066049 A066050`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Dec 29 2001`
	EXTENSIONS	`More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 03 2002`

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Last modified February 16 18:54 EST 2012. Contains 205939 sequences.