Numerators of A178381(4*n+1)/A178381(4*n).

Terms

a(0) =1a(1) =5a(2) =25a(3) =65a(4) =85a(5) =445a(6) =1165a(7) =1525a(8) =7985a(9) =20905a(10) =27365a(11) =143285a(12) =375125a(13) =491045a(14) =2571145a(15) =6731345a(16) =8811445a(17) =46137325a(18) =120789085a(19) =158114965a(20) =827900705a(21) =2167472185a(22) =2837257925a(23) =14856075365a(24) =38893710245a(25) =50912527685a(26) =266581455865