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

A370549

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

Terms

    a(0) =1a(1) =3a(2) =0a(3) =-5a(4) =-3a(5) =35a(6) =11a(7) =-65a(8) =-3055a(9) =4433a(10) =2561a(11) =-18863a(12) =-614635a(13) =14705a(14) =3871801a(15) =-6702403a(16) =-23794993a(17) =-21392575a(18) =1677354925a(19) =2206770805a(20) =-30432904645a(21) =-617315066615

External references