A077145 a(n) = floor(product of next n primes / product of next n composite numbers).

0, 0, 0, 3, 17, 106, 590, 3090, 21092, 127889, 734604, 6252468, 32854824, 279387963, 1909105118, 12319099520, 95059552565, 740652053314, 4888570540807, 40743793439712, 307640708818550, 2379664631112651, 17269477509704034, 165628134793721883

Offset: 1

Author

Amarnath Murthy, Oct 30 2002

Keywords

• nonn

Crossrefs

Cf. A007467, A071221.

Cf. A077143, A077144.

Formula

a(n) = floor(A007467(n)/A071221(n)). - Michel Marcus, May 08 2025

Extensions

a(7)-a(9) from Donald Sampson (marsquo(AT)hotmail.com), Dec 08 2003

More terms from Sean A. Irvine, May 07 2025