a(n) = denominator(b(n)), where b(1) = b(2) = 1, b(n) = (b(n-1) + b(n-2))/(n-1).

A069944

a(n) = denominator(b(n)), where b(1) = b(2) = 1, b(n) = (b(n-1) + b(n-2))/(n-1).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =3a(4) =12a(5) =60a(6) =180a(7) =630a(8) =10080a(9) =18144a(10) =453600a(11) =2494800a(12) =59875200a(13) =778377600a(14) =1089728640a(15) =40864824000

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