a(n) is the smallest number not already in the sequence, such that the concatenation of all a(n) displays the periodic digit string 1, 2, 3, 4 (and repeat).
A165302
a(n) is the smallest number not already in the sequence, such that the concatenation of all a(n) displays the periodic digit string 1, 2, 3, 4 (and repeat).
Terms
- a(0) =1a(1) =2a(2) =3a(3) =4a(4) =12a(5) =34a(6) =123a(7) =41a(8) =23a(9) =412a(10) =341a(11) =234a(12) =1234a(13) =12341a(14) =2341a(15) =23412a(16) =3412a(17) =34123a(18) =4123a(19) =41234a(20) =123412a(21) =341234a(22) =1234123a(23) =412341a(24) =234123a(25) =4123412a(26) =3412341a(27) =2341234a(28) =12341234a(29) =123412341
External references
- oeis: A165302