%I #15 Oct 07 2019 11:28:49

%S 1,1,1,1,5,11,103,71,661,19099,329891,1,36846277,75024347,3790360487,

%T 22163972339,1230752346353,538105034941,336967037143579,

%U 1713311273363831,117876683047,1188161445853707907,48869596859895986087,550042909337978226383,765041185860961084291

%N Highest proper factor of n!+1.

%H Amiram Eldar, <a href="/A056111/b056111.txt">Table of n, a(n) for n = 0..139</a>

%H Hisanori Mishima, <a href="http://www.asahi-net.or.jp/~KC2H-MSM/mathland/matha1/matha104.htm">Factorizations of many number sequences</a>

%H Hisanori Mishima, <a href="http://www.asahi-net.or.jp/~KC2H-MSM/mathland/matha1/matha103.htm">Factorizations of many number sequences</a>

%H R. G. Wilson v, <a href="/A038507/a038507.txt">Explicit factorizations</a>

%F a(n) = A038507(n)/A051301(n).

%t a[n_] := Divisors[n!+1][[ -2]]

%Y Cf. A002583, A038507, A051301, A056110.

%K nonn

%O 0,5

%A _Henry Bottomley_, Jun 12 2000

%E Corrected and extended by _Dean Hickerson_, Aug 30 2001

%E More terms from _Amiram Eldar_, Oct 07 2019