a(n) is the smallest number not occurring earlier whose concatenation with the previous term contains the smallest possible number of numeric substrings strictly larger than for the preceding term; a(0) = 0.

A307511

a(n) is the smallest number not occurring earlier whose concatenation with the previous term contains the smallest possible number of numeric substrings strictly larger than for the preceding term; a(0) = 0.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =222a(4) =22a(5) =2222a(6) =3a(7) =120a(8) =10a(9) =234a(10) =24a(11) =103a(12) =112a(13) =122a(14) =100a(15) =2345a(16) =25a(17) =1130a(18) =102a(19) =1345a(20) =111a(21) =2340a(22) =1000a(23) =111213a(24) =11a(25) =112340a(26) =13a(27) =111240a(28) =124a(29) =11350

External references