a(n) is the least k such that, if x_0, x_1, x_2, ... are the iterations of the arithmetic derivative A003415 starting with x_0 = k, x_0 > x_1 > ... > x_n.
A363373
a(n) is the least k such that, if x_0, x_1, x_2, ... are the iterations of the arithmetic derivative A003415 starting with x_0 = k, x_0 > x_1 > ... > x_n.
Terms
- a(0) =0a(1) =1a(2) =2a(3) =6a(4) =9a(5) =14a(6) =33a(7) =62a(8) =177a(9) =886a(10) =1155a(11) =1719a(12) =3255a(13) =4018a(14) =13377a(15) =19942a(16) =46022a(17) =103401a(18) =193426a(19) =422751a(20) =634113a(21) =1080742a(22) =2850591a(23) =5493662a(24) =10252635a(25) =25631525a(26) =51217666a(27) =135055839
External references
- oeis: A363373