id:A085367 - OEIS Search Results

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Semiprimes that can be expressed as the sum or difference of two cubes. Common terms of A001358 and A045980.

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9, 26, 35, 65, 91, 133, 169, 215, 217, 218, 335, 341, 386, 407, 469, 485, 511, 559, 721, 737, 793, 817, 866, 973, 1027, 1115, 1141, 1241, 1261, 1267, 1339, 1343, 1385, 1387, 1538, 1603, 1685, 1727, 1843, 1853, 1981, 2071, 2189, 2402, 2413, 2611, 2743, 2771 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(1)=9 because 2^3+1^3=33, a(2)=26=3^3-1^3=213.` `a(5)=91 is the smallest semiprime expressible in two different ways: 91=4^3+3^3=6^3-5^3=7*13`
	CROSSREFS	`Cf. A001358, A045980, A085366.` `Sequence in context: A144701 A022421 A075395 this_sequence A081267 A154560 A052153` `Adjacent sequences: A085364 A085365 A085366 this_sequence A085368 A085369 A085370`
	KEYWORD	`nonn`
	AUTHOR	`Hugo Pfoertner (hugo(AT)pfoertner.org), Jun 25 2003`

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

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