Denominators of alternating sum transform (PSumSIGN) of Harmonic numbers H(n) = A001008/A002805.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =15a(5) =12a(6) =105a(7) =24a(8) =315a(9) =120a(10) =3465a(11) =40a(12) =45045a(13) =280a(14) =45045a(15) =560a(16) =765765a(17) =5040a(18) =14549535a(19) =5040a(20) =14549535a(21) =55440a(22) =334639305a(23) =55440a(24) =1673196525a(25) =720720a(26) =5019589575a(27) =720720a(28) =145568097675a(29) =720720