a(n) = -A141055(n)/(n+1)!.

Terms

a(0) =1a(1) =1a(2) =10a(3) =5a(4) =42a(5) =14a(6) =60a(7) =15a(8) =110a(9) =22a(10) =5460a(11) =910a(12) =420a(13) =60a(14) =2040a(15) =255a(16) =11970a(17) =1330a(18) =23100a(19) =2310a(20) =15180a(21) =1380a(22) =163800a(23) =13650a(24) =3276a(25) =252a(26) =8120a(27) =580a(28) =286440a(29) =19096