A152530 a(n) = p(n)*p(n+2)-p(n+1), where p(n) is the n-th prime.

7, 16, 48, 80, 174, 230, 372, 528, 684, 1042, 1234, 1550, 1884, 2232, 2720, 3174, 3892, 4264, 4820, 5536, 5980, 6948, 7962, 8892, 9890, 10704, 11120, 11982, 13730, 14676, 17268, 18072, 20274, 20840, 23242, 24456, 26056, 28032

Offset: 1

Author

Omar E. Pol, Dec 06 2008

Keywords

• easy
• nonn

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A000040, A111071, A152527, A152528, A152529, A152531, A152532.

Programs

Maple

A152530 := proc(n)
    ithprime(n)*ithprime(n+2)-ithprime(n+1) ;
end proc: # R. J. Mathar, Jul 28 2015

Mathematica

#[[1]]#[[3]]-#[[2]]&/@Partition[Prime[Range[50]],3,1] (* Harvey P. Dale, Dec 19 2012 *)