login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A097494
a(n) = floor( prime(n+1)*prime(n+2)/prime(n) ).
0
7, 11, 15, 20, 20, 24, 25, 35, 39, 39, 48, 47, 49, 57, 66, 67, 69, 77, 77, 81, 89, 93, 104, 110, 107, 109, 113, 115, 131, 147, 141, 145, 151, 161, 159, 169, 173, 177, 185, 187, 193, 203, 199, 203, 213, 236, 239, 233, 235, 243, 247, 253, 267, 269, 275, 277, 279
OFFSET
1,1
PROG
(PARI) p(n) = for(x=1, n, y=prime(x+1)*prime(x+2)/prime(x)+.0; print1(floor(y)", "))
CROSSREFS
Sequence in context: A130569 A294294 A078176 * A037136 A023486 A284485
KEYWORD
frac,nonn
AUTHOR
Cino Hilliard, Aug 24 2004
STATUS
approved