A124669 Product of successive primes minus 2.

4, 13, 33, 75, 141, 219, 321, 435, 665, 897, 1145, 1515, 1761, 2019, 2489, 3125, 3597, 4085, 4755, 5181, 5765, 6555, 7385, 8631, 9795, 10401, 11019, 11661, 12315, 14349, 16635, 17945, 19041, 20709, 22497, 23705, 25589, 27219, 28889, 30965, 32397

Offset

1,1

Links

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

Mathematica

Times@@@Partition[Prime[Range[50]], 2, 1]-2 (* Harvey P. Dale, Nov 02 2020 *)

Prog

(PARI) g(n) = forprime(x=1, n, if(isprime(x+2), y=x*(x+2)-2; print1(y", ")))

Crossrefs

Cf. A123921.

Sequence in context: A266094 A054039 A302082 * A036894 A227122 A176361

Adjacent sequences: A124666 A124667 A124668 * A124670 A124671 A124672

Keyword

easy,nonn

Author

Cino Hilliard, Dec 27 2006

Status

approved