Length of period of continued fraction for square root of -1 + n!.

Terms

a(0) =0a(1) =0a(2) =1a(3) =4a(4) =4a(5) =28a(6) =4a(7) =12a(8) =64a(9) =600a(10) =380a(11) =10908a(12) =23720a(13) =168072a(14) =5924a(15) =1643064a(16) =1896378a(17) =685042a(18) =16089346a(19) =695623764a(20) =722967470a(21) =6166991370a(22) =18958904524a(23) =248206315456a(24) =644968837504