OFFSET
1,1
FORMULA
EXAMPLE
a(4)= 73 because 73= abs(9^2-2^3)= abs(81 - 8 ) and A130474(4)= 89 =9^2+2^3= 81+8 ; A130474(4) > a(4) ; A130474(4) and a(4) are prime numbers, members of A000040.
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Tomas Xordan, May 28 2007
STATUS
approved