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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

Robert Israel, Table of n, a(n) for n = 1..10000

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

Cf. A005408, A042964, A047566, A115419, A115420.

Sequence in context: A035037 A070618 A070625 * A108927 A242956 A085259

Adjacent sequences:  A115418 A115419 A115420 * A115422 A115423 A115424

KEYWORD

nonn,base,easy

AUTHOR

Jeremy Gardiner, Jan 22 2006

STATUS

approved

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Last modified June 21 23:16 EDT 2018. Contains 305646 sequences. (Running on oeis4.)