A130468 Primes q of the form a^3+b^2, such that p =A130467(n)= a^2+b^3 is prime and smaller than q; p < q ; b < a.

31, 73, 733, 359, 1009, 2753, 2213, 1753, 1367, 1049, 5857, 1777, 21961, 13873, 8081, 10729, 6959, 54881, 36037, 91141, 59419, 110641, 140617, 43019, 3571, 157489, 157513, 195121, 140689, 195193, 274661, 314441, 15881, 227081, 250147, 6121

Offset

1,1

Links

Table of n, a(n) for n=1..36.

Formula

q=a^2+b^3; p=a^3+b^2; p < q ; a < b

Example

a(5)=1009 because 1009=10^3+3^2 and A130467(5)=127 =10^2 + 3^3 ; 127 >1009; 3 > 10

Crossrefs

Cf. A130467; A000040.

Sequence in context: A298613 A155933 A163428 * A068917 A317053 A009408

Adjacent sequences: A130465 A130466 A130467 * A130469 A130470 A130471

Keyword

easy,nonn

Author

Tomas Xordan, May 27 2007

Status

approved