OFFSET
0,1
EXAMPLE
a(5) = 2803043 because 2*3*5*7*11 + 13*17*19*23*29 = 2803043.
MAPLE
a:= n-> add(mul(ithprime(i+j), i=1..n), j=[0, n]):
seq(a(n), n=0..20); # Alois P. Heinz, Apr 13 2024
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Jason Earls, May 12 2004
STATUS
approved