id:A029827 - OEIS Search Results

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Composite connected numbers: composite n such that g(n)<g(a)+g(b) holds for all relatively prime factorizations n=a.b, where g(x) = ceiling(log_2 x).

+0
10

15, 45, 51, 55, 57, 63, 85, 95, 99, 111, 115, 117, 119, 123, 153, 171, 185, 187, 201, 205, 207, 209, 213, 215, 219, 221, 225, 231, 235, 237, 245, 247, 249, 253, 255, 323, 333, 335, 355, 361, 369, 387, 391, 393, 395, 405, 407, 411, 415, 417, 423, 425, 429 (list; graph; listen)

	OFFSET	`1,1`
	REFERENCES	`E. Labos, Spike Generating Dynamical Systems and Networks, In Lect. Notes in Economics and Mathematical Systems, pp. 189-206. Springer Verlag 1985.`
	EXAMPLE	`n=46665=5x9x17x61 is not a connected number because n=61x765, but 16>=6+10.`
	CROSSREFS	`Cf. A029837, A036381-A036390, A034444.` `Adjacent sequences: A029824 A029825 A029826 this_sequence A029828 A029829 A029830` `Sequence in context: A126369 A133343 A027845 this_sequence A119123 A084821 A066763`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu)`

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.

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