OFFSET
2,1
EXAMPLE
a(3) = floor(log(7*11*13*17*19*23)) = floor(15.82) = 15.
MATHEMATICA
Table[Floor[Plus @@ Table[Log[Prime[i]*1.], {i, PrimePi[n!] + 1, PrimePi[(n + 1)!]}]], {n, 2, 11}]
CROSSREFS
KEYWORD
nonn,more,changed
AUTHOR
Olivier Gérard, Oct 29 2017
EXTENSIONS
a(12) from Daniel Suteu, Nov 15 2018
STATUS
approved