OFFSET
1,1
EXAMPLE
a(1) = 2 * 3 = 6 (the product of the first 2 primes).
a(2) = 5 * 7 * 11 = 385 (the product of the next 3 primes).
a(3) = 13 * 17 * 19 * 23 * 29 = 2800733 (product of next 5 primes).
a(4) = 31 * 37 * 41 * 43 * 47 * 53 * 59 = 297194980009 (product next 7 primes).
MATHEMATICA
s[n_] := Sum[Prime[i], {i, n}]; Table[Product[Prime[j], {j, s[n - 1] + 1, s[n]}], {n, 8}] (* Arkadiusz Wesolowski, May 21 2013 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Walter Carlini, Jul 28 2006
EXTENSIONS
a(4) corrected by Arkadiusz Wesolowski, May 21 2013
STATUS
approved