a(1)=1; thereafter, a(n+1) = Sum_{d divides n} (n!/(d!*(n/d)!))*a(d).

A295577

a(1)=1; thereafter, a(n+1) = Sum_{d divides n} (n!/(d!*(n/d)!))*a(d).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =10a(5) =11a(6) =192a(7) =193a(8) =3554a(9) =23715a(10) =190036a(11) =190037a(12) =20813718a(13) =20813719a(14) =1690001240a(15) =23484574041a(16) =182792522842a(17) =182792522843

External references