Integers whose decimal expansion start with 1, do not contain zeros and each successive digit to the right is at most one greater than the previous digit.

A071159

Integers whose decimal expansion start with 1, do not contain zeros and each successive digit to the right is at most one greater than the previous digit.

Terms

    a(0) =1a(1) =11a(2) =12a(3) =111a(4) =112a(5) =121a(6) =122a(7) =123a(8) =1111a(9) =1112a(10) =1121a(11) =1122a(12) =1123a(13) =1211a(14) =1212a(15) =1221a(16) =1222a(17) =1223a(18) =1231a(19) =1232a(20) =1233a(21) =1234a(22) =11111a(23) =11112a(24) =11121a(25) =11122a(26) =11123a(27) =11211a(28) =11212a(29) =11221

External references