a(n) = least m such that if r and s in {1/1, 1/4, 1/7,..., 1/(3n-2)} satisfy r < s, then r < k/m < s for some integer k.
A024822
a(n) = least m such that if r and s in {1/1, 1/4, 1/7,..., 1/(3n-2)} satisfy r < s, then r < k/m < s for some integer k.
Terms
- a(0) =2a(1) =5a(2) =9a(3) =22a(4) =31a(5) =53a(6) =81a(7) =97a(8) =134a(9) =177a(10) =201a(11) =253a(12) =311a(13) =342a(14) =409a(15) =482a(16) =561a(17) =603a(18) =691a(19) =785a(20) =885a(21) =937a(22) =1046a(23) =1161a(24) =1282a(25) =1409a(26) =1475a(27) =1611a(28) =1753a(29) =1901
External references
- oeis: A024822