id:A130467 - OEIS Search Results

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Primes p of the form p=a^2+b^3, such that q =A130468(n)= a^3+b^2 is prime and greater than p; p < q ; b < a.

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17, 43, 89, 113, 127, 223, 233, 269, 337, 443, 449, 487, 811, 919, 1129, 1213, 1361, 1471, 2089, 2089, 2521, 2647, 2731, 2953, 2969, 3041, 3259, 3391, 3433, 4093, 4441, 4651, 4721, 4721, 4969, 5237, 5309, 5527, 5689, 6121, 6329, 6361, 6427, 7057, 7121 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`p=a^2+b^3;q=a^3+b^2`
	EXAMPLE	`a(1)=17 because 17=3^2+2^3=9+8 and A130468(1)= 31=3^3+2^2=27+4; 17<31 ; 2 < 3;` `a(5)=127 because 127=10 ^2 + 3 ^3= 100+27 and A130468(5)= 1009 = 10 ^3 + 3 ^2 = 1000+9; 127< 1009; 3 < 10`
	CROSSREFS	`Cf. A130468; A000040.` `Adjacent sequences: A130464 A130465 A130466 this_sequence A130468 A130469 A130470` `Sequence in context: A109998 A031340 A098072 this_sequence A112885 A093191 A033703`
	KEYWORD	`easy,nonn`
	AUTHOR	`Tomas Xordan (xordan.tom(AT)gmail.com), May 27 2007`

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Last modified October 16 00:31 EDT 2008. Contains 145098 sequences.

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