A228071 -id:A228071 - cp's OEIS frontend

A269130 a(n) = n + (n base 2 regarded as a decimal number).

0, 2, 12, 14, 104, 106, 116, 118, 1008, 1010, 1020, 1022, 1112, 1114, 1124, 1126, 10016, 10018, 10028, 10030, 10120, 10122, 10132, 10134, 11024, 11026, 11036, 11038, 11128, 11130, 11140, 11142, 100032, 100034, 100044, 100046, 100136, 100138, 100148, 100150, 101040

Offset: 0

Isaac S. Friedman, Feb 19 2016

All terms in this sequence are even, because every even number produces an even binary number (ends with 0) and every odd number produces an odd binary number (ends with 1).

			a(4) = convert_to_binary(4) + 4 = 100 + 4 = 104.

Isaac S. Friedman, Table of n, a(n) for n = 0..999

Cf. A000027 (counting numbers), A007088 (binary numbers).

Cf. A127906 (multiplicated), A228071 (subtracted).

Table[n+FromDigits[IntegerDigits[n,2]],{n,0,40}] (* Harvey P. Dale, Jul 08 2019 *)

a(n)=fromdigits(binary(n))+n \\ Charles R Greathouse IV, Feb 19 2016

a(n) = subst(Pol(binary(n)), x, 10) + n \\ Michel Marcus, Feb 20 2016

a(n) = A007088(n) + n.

cp's OEIS Frontend

A269130 a(n) = n + (n base 2 regarded as a decimal number).

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