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A127228 a(n)= numerator of ((n + 4)! - (n - 4)!)/(n!). 4

%I

%S 40319,362879,1814399,6652799,19958399,51891839,121080959,259459199,

%T 518918399,980179199,1764322559,3047466239,5079110399,8204716799,

%U 12893126399,19769460479,29654190719,43609103999,62990927999

%N a(n)= numerator of ((n + 4)! - (n - 4)!)/(n!).

%t Table[Numerator[((n + 4)! - (n - 4)!)/(n!)], {n, 4, 30}]

%Y Cf. A028387, A062938, A127227, A127229, A127230.

%K nonn,frac

%O 4,1

%A _Artur Jasinski_, Jan 09 2007

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Last modified January 20 16:27 EST 2022. Contains 350472 sequences. (Running on oeis4.)