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A115421 Numbers having a 1 in position 5 of their binary expansion. 6
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
One of the mystery calculator sequences: A005408, A042964, A047566, A115419, A115420, A115421.
LINKS
Maths Magic, Mystery Calculator.
FORMULA
From Robert Israel, Nov 14 2016: (Start)
a(n + 32) = a(n) + 64.
O.g.f.: (31 + (1 - x^33)/(1 - x))*x/((1 - x)*(1 - x^32)). (End)
EXAMPLE
a(1) = 32 = 100000 in binary.
MAPLE
a:= n-> n+31 + 32*iquo(n-1, 32):
seq(a(n), n=1..100); # Alois P. Heinz, Aug 22 2011
MATHEMATICA
Select[Range[256], BitAnd[#, 32] == 32 &] (* Alonso del Arte, Nov 14 2016 *)
CROSSREFS
Sequence in context: A035037 A070618 A070625 * A108927 A242956 A085259
KEYWORD
nonn,base,easy
AUTHOR
Jeremy Gardiner, Jan 22 2006
STATUS
approved

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Last modified March 19 03:33 EDT 2024. Contains 370952 sequences. (Running on oeis4.)