id:A067400 - OEIS Search Results

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Non-uniquely factorizable OR-numbrals, i.e. numbrals for which there exist more than one different factorizations into irreducible factors (modulo order).

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15, 30, 31, 60, 62, 63, 85, 95, 111, 120, 123, 124, 125, 126, 127, 170, 175, 190, 191, 207, 222, 223, 239, 240, 243, 245, 246, 247, 248, 250, 251, 252, 253, 254, 255, 340, 341, 350, 351, 367, 379, 380, 381, 382, 383, 399, 414, 415, 443, 444, 445, 446, 447 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`See A048888 for the definition of OR-numbral arithmetic.`
	EXAMPLE	`15 is in A067400 since [15] = [3] * [5] = [3]^3 and [3] and [5] are irreducible.`
	CROSSREFS	`Cf. A003986, A007059, A048888, A067138, A067139, A067398, A067399, A067401.` `Sequence in context: A040210 A115776 A095783 this_sequence A115801 A033898 A051967` `Adjacent sequences: A067397 A067398 A067399 this_sequence A067401 A067402 A067403`
	KEYWORD	`nonn`
	AUTHOR	`Jens Voss (jens.voss(AT)poet.de), Jan 24 2002`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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