a(n) = the denominator of the continued fraction [[n/1];[n/2],[n/3],..,[n/n]], where [x] is floor(x).

A128600

a(n) = the denominator of the continued fraction [[n/1];[n/2],[n/3],..,[n/n]], where [x] is floor(x).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =8a(5) =27a(6) =44a(7) =137a(8) =305a(9) =905a(10) =1466a(11) =7411a(12) =11986a(13) =33597a(14) =91007a(15) =322205a(16) =521306a(17) =2292156a(18) =3708875a(19) =15639101a(20) =40100349a(21) =106348943a(22) =172076807a(23) =1071988711a(24) =2129108426a(25) =5564227811a(26) =13812311521a(27) =53326260495a(28) =86283685147a(29) =492560346093

External references