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Numbers in which all pairs of consecutive base-7 digits differ by 3.
0

%I #12 Jul 28 2023 21:34:48

%S 1,2,3,4,5,6,11,19,21,27,29,37,45,78,135,150,192,207,264,315,321,550,

%T 950,1050,1056,1344,1350,1450,1850,2208,2250,3851,6652,7353,7395,9411,

%U 9453,10154,12955,15456,15462,15750,15756,26961,46569,51471,51477,51765,51771

%N Numbers in which all pairs of consecutive base-7 digits differ by 3.

%t Join[Range[6],Select[Range[27000],Union[Abs[Differences[IntegerDigits[#,7]]]] =={3}&]] (* _Harvey P. Dale_, Apr 21 2011 *)

%K nonn,base

%O 1,2

%A _Clark Kimberling_