Starts with 2; has two properties: concatenation of its digits is same string as concatenation of digits of its first differences and sequence and first differences have no term in common. When there is a choice in choosing the next term in the first differences, choose the smallest number not yet present in either the sequence or its first differences.
A139334
Starts with 2; has two properties: concatenation of its digits is same string as concatenation of digits of its first differences and sequence and first differences have no term in common. When there is a choice in choosing the next term in the first differences, choose the smallest number not yet present in either the sequence or its first differences.
Terms
- a(0) =2a(1) =24a(2) =28a(3) =311a(4) =312a(5) =325a(6) =337a(7) =340a(8) =365a(9) =398a(10) =405a(11) =3808a(12) =3814a(13) =3819a(14) =3858a(15) =3866a(16) =3906a(17) =3959a(18) =4039a(19) =4122a(20) =4203a(21) =4246a(22) =5065a(23) =5103a(24) =5161a(25) =5547a(26) =5610a(27) =5700a(28) =6339a(29) =6398
External references
- oeis: A139334