A305989 Numbers in binary reversed.
0, 1, 1, 11, 1, 101, 11, 111, 1, 1001, 101, 1101, 11, 1011, 111, 1111, 1, 10001, 1001, 11001, 101, 10101, 1101, 11101, 11, 10011, 1011, 11011, 111, 10111, 1111, 11111, 1, 100001, 10001, 110001, 1001, 101001, 11001, 111001, 101, 100101, 10101, 110101, 1101, 101101, 11101, 111101, 11, 100011, 10011
Offset: 0
Examples
11 is 1011 in binary, and reversing it gives 1101 = a(11).
Links
- David F. Marrs, Table of n, a(n) for n = 0..10000
Programs
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Maple
a:= n-> parse(cat(convert(n, base, 2)[])): seq(a(n), n=0..75); # Alois P. Heinz, Jun 17 2018
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Mathematica
Table[FromDigits@ Reverse@ IntegerDigits[n, 2], {n, 0, 50}] -
PARI
a(n) = fromdigits(Vecrev(digits(n, 2)), 10);
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Python
print(0) for i in range(1,50): print(format(i, 'b')[::-1].strip("0"))