id:A108541 - OEIS Search Results

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Lesser prime factor of n-th golden semiprime.

+0
9

2, 3, 7, 11, 19, 23, 29, 37, 41, 67, 79, 97, 101, 103, 107, 131, 149, 163, 167, 181, 193, 227, 241, 271, 277, 283, 311, 353, 367, 379, 383, 397, 409, 419, 433, 449, 457, 487, 509, 563, 607, 613, 631, 661, 719, 733, 761, 797, 853, 883, 919, 941, 971, 997, 1031 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(n) = A108540(n)/A108542(n);` `abs(phi-A108542(n)/a(n)) < 1, where phi = golden ratio = (1+sqrt(5))/2.`
	CROSSREFS	`Cf. A084126, A108543, A108544, A108539.` `Sequence in context: A077165 A090666 A140409 this_sequence A038937 A092940 A045326` `Adjacent sequences: A108538 A108539 A108540 this_sequence A108542 A108543 A108544`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 09 2005`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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