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 A129537 Prime numbers p of the form p=x^2+y^3 such that there exist three other prime numbers q,r,s such q=abs(x^2-y^3) ; r=x^3+y^2 ; s=abs(x^3-y^2); x > y. 0
 127, 449, 811, 2089, 2521, 4651, 4969, 6427, 13697, 17351, 23831, 38393, 52321, 53569, 69119, 69767, 112571, 113021, 116089, 143257, 156941, 168409, 171757, 196561, 197569, 228751, 250489, 250969, 294641, 328121, 337627, 350281, 355321 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS FORMULA a(n)=p=x^2+y^3; q=x^2-y3;r=x^3+y^2;s=x^3-y^2 ; x > y ; a(n),q,r,s are prime numbers. EXAMPLE p=a(1)= 127 because: P=127=10^2+3^3=100+27; q=73=10^2-3^3=100-27; r=1009=10^3+3^2=1000+9; s=991=10^3-3^2=1000-9 CROSSREFS Cf. A000040. Sequence in context: A298237 A299363 A250892 * A057814 A038646 A245867 Adjacent sequences:  A129534 A129535 A129536 * A129538 A129539 A129540 KEYWORD easy,nonn AUTHOR Tomas Xordan, May 29 2007 STATUS approved

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Last modified April 6 11:51 EDT 2020. Contains 333273 sequences. (Running on oeis4.)