A127227 - OEIS

%I #2 Mar 31 2012 10:22:03

%S 719,5039,20159,60479,151199,332639,665279,1235519,2162159,3603599,

%T 5765759,8910719,13366079,19535039,27907199,39070079,53721359,

%U 72681839,96909119,127511999,165765599,213127199,271252799,342014399,427517999

%N a(n)= numerator of ((n + 3)! - (n - 3)!)/(n!).

%t Table[Numerator[((n + 3)! - (n - 3)!)/(n!)], {n, 3, 30}]

%Y Cf. A028387, A062938, A127228, A127229, A127230.

%K nonn,frac

%O 3,1

%A _Artur Jasinski_, Jan 09 2007