First integer > n reached under iteration of map x -> (5/3)*ceiling(x) when started at n, or -1 if no such integer is ever reached.
A087708
First integer > n reached under iteration of map x -> (5/3)*ceiling(x) when started at n, or -1 if no such integer is ever reached.
Terms
- a(0) =20a(1) =20a(2) =5a(3) =20a(4) =15a(5) =10a(6) =20a(7) =40a(8) =15a(9) =1770a(10) =90a(11) =20a(12) =290a(13) =40a(14) =25a(15) =45a(16) =1770a(17) =30a(18) =90a(19) =95a(20) =35a(21) =290a(22) =65a(23) =40a(24) =70a(25) =345a(26) =45a(27) =220a(28) =1770a(29) =50
External references
- oeis: A087708