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A290042
a(n) = product of n consecutive primes starting with nextprime(a(n-1)), with a(0) = 1.
1
1, 2, 15, 7429, 3080515841187929, 277406882783236415738415740236053512093193768766780577802245485078023713619433
OFFSET
0,2
COMMENTS
The prime factors are A290043.
FORMULA
a(n) = Product_{k=n(n-1)/2 + 1..n(n+1)/2} A290043(k) for n > 0.
EXAMPLE
a(1) = nextprime(1) = 2;
a(2) = nextprime(2)*nextprime(nextprime(2)) = 3*5 = 15;
a(3) = nextprime(15)*nextprime(nextprime(15))*nextprime(nextprime(nextprime(15))) = 17*19*23 = 7429.
CROSSREFS
Cf. A290043.
Sequence in context: A064171 A365628 A135085 * A080911 A175981 A056072
KEYWORD
nonn
AUTHOR
Jonathan Sondow, Aug 20 2017
STATUS
approved