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A032532
Integer part of decimal 'base-2 looking' numbers divided by their actual base-2 values (denominator of a(n) is n, numerator is n written in binary but read in decimal).
21
1, 5, 3, 25, 20, 18, 15, 125, 111, 101, 91, 91, 84, 79, 74, 625, 588, 556, 526, 505, 481, 459, 439, 458, 440, 423, 407, 396, 382, 370, 358, 3125, 3030, 2941, 2857, 2780, 2705, 2634, 2566, 2525, 2463, 2405, 2349, 2297, 2246, 2198, 2151, 2291
OFFSET
1,2
LINKS
FORMULA
a(n) = floor(A007088(n)/n).
EXAMPLE
1_2 / 1_10 = 1/1 = 1;
10_2 / 2_10 = 10/2 = 5;
11_2 / 3_10 = 11/3 = 3.666666666...;
100_2 / 4_10 = 100/4 = 25;
101_2 / 5_10 = 101/5 = 20.2.
MATHEMATICA
Array[Floor[FromDigits[IntegerDigits[#, 2]]/#] &, 48] (* Michael De Vlieger, Oct 06 2019 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Patrick De Geest, Apr 15 1998
STATUS
approved