a(n) is the smallest number whose odd hailstone sequence has length n (including 1 and itself) and is in descending order.

A330732

a(n) is the smallest number whose odd hailstone sequence has length n (including 1 and itself) and is in descending order.

Terms

    a(0) =1a(1) =5a(2) =13a(3) =17a(4) =45a(5) =241a(6) =321a(7) =1713a(8) =9137a(9) =24365a(10) =36033a(11) =173261a(12) =231681a(13) =630033a(14) =1642769a(15) =4380717a(16) =11715629a(17) =31241677a(18) =41655569a(19) =111081517a(20) =148108689a(21) =789913009a(22) =1053217345a(23) =1404289793a(24) =3744772781a(25) =9986060749a(26) =13314747665a(27) =35505993773a(28) =94682650061a(29) =128599099649

External references