# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a139193 Showing 1-1 of 1 %I A139193 #6 Oct 03 2015 23:17:30 %S A139193 23,1007,7983359,1245404159,71137485619199,24329020081766399, %T A139193 5170403347776995327999,1768352398747940390908723199999, %U A139193 1644567730835584563545112575999999 %N A139193 Natural numbers of the form (prime(n)! - 5)/5. %p A139193 A039716 := proc(n) factorial(ithprime(n)) ; end: A139193 := proc(n) A039716(n)/5-1 ; end: seq(A139193(n),n=3..14) ; # _R. J. Mathar_, Sep 18 2009 %t A139193 Table[(Prime[n]! - 5)/5, {n, 3, 20}] %Y A139193 Cf. A139189, A139190, A139191, A139192, A139193, A139194, A139195, A139196, A139197, A139198. %K A139193 nonn %O A139193 1,1 %A A139193 _Artur Jasinski_, Apr 11 2008 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE