Denominator of b(n) given by b(1) = 1, b(2) = 2; for n >= 3, b(n) = (-1)^n (2n-1) ((n-2)!!)^2/((n-1)!!)^2, where n!! is the double factorial A006882.
A095175
Denominator of b(n) given by b(1) = 1, b(2) = 2; for n >= 3, b(n) = (-1)^n (2n-1) ((n-2)!!)^2/((n-1)!!)^2, where n!! is the double factorial A006882.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =9a(4) =64a(5) =225a(6) =256a(7) =245a(8) =16384a(9) =99225a(10) =65536a(11) =480249a(12) =1048576a(13) =1002001a(14) =4194304a(15) =41409225a(16) =1073741824a(17) =2393453205a(18) =4294967296a(19) =4102737925a(20) =68719476736a(21) =940839860961a(22) =274877906944
External references
- oeis: A095175