Denominators of the (simplified) rational numbers n*2^(n - 1)/(n - 1)! .

A248592

Denominators of the (simplified) rational numbers n*2^(n - 1)/(n - 1)! .

Terms

    a(0) =1a(1) =1a(2) =1a(3) =3a(4) =3a(5) =5a(6) =45a(7) =315a(8) =35a(9) =567a(10) =14175a(11) =51975a(12) =467775a(13) =868725a(14) =2837835a(15) =638512875a(16) =638512875a(17) =1206079875a(18) =97692469875a(19) =371231385525a(20) =441942125625

External references