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A176894 Increase each digit in the binary representation of n by 2. 0

%I

%S 2,3,32,33,322,323,332,333,3222,3223,3232,3233,3322,3323,3332,3333,

%T 32222,32223,32232,32233,32322,32323,32332,32333,33222,33223,33232,

%U 33233,33322,33323,33332,33333,322222,322223,322232,322233,322322

%N Increase each digit in the binary representation of n by 2.

%C Or: add two times the repunit of matching length to A007088(n).

%F a(n) = A007088(n)+A002276(A070939(n)).

%e 0+2, 1+2, 10+22, 11+22, 100+222, 101+222, 110+222, 111+222, 1000+2222, 1001+2222,...

%t Table[Sum[Table[((Reverse[IntegerDigits[n, 2]]) /. 0 -> 2) /. 1 -> 3, {n, 0, 50}][[n]][[m]]*10^( m - 1), {m, 1, Length[Table[((Reverse[IntegerDigits[n, 2]]) /. 0 -> 2) /. 1 -> 3, {n, 0, 50}][[n]]]}], {n, 1, 51}]

%t Table[FromDigits[2 + IntegerDigits[n, 2]], {n, 0, 100}]

%K nonn,base,easy

%O 0,1

%A _Roger L. Bagula_, Apr 28 2010

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Last modified June 20 20:36 EDT 2021. Contains 345235 sequences. (Running on oeis4.)