a(n) is the denominator of the imaginary part of Product_{k=1..n} (1/k + i) where i is the imaginary unit.

A370550

a(n) is the denominator of the imaginary part of Product_{k=1..n} (1/k + i) where i is the imaginary unit.

Terms

    a(0) =1a(1) =2a(2) =1a(3) =3a(4) =4a(5) =24a(6) =9a(7) =56a(8) =2016a(9) =5184a(10) =1512a(11) =33264a(12) =342144a(13) =48384a(14) =2095632a(15) =100590336a(16) =12773376a(17) =146313216a(18) =905313024a(19) =6552741888a(20) =16679706624

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