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A014312 Numbers with exactly 4 ones in binary expansion. +0
8
15, 23, 27, 29, 30, 39, 43, 45, 46, 51, 53, 54, 57, 58, 60, 71, 75, 77, 78, 83, 85, 86, 89, 90, 92, 99, 101, 102, 105, 106, 108, 113, 114, 116, 120, 135, 139, 141, 142, 147, 149, 150, 153, 154, 156, 163, 165, 166, 169, 170, 172, 177, 178 (list; graph; listen)
OFFSET

1,1

MATHEMATICA

Select[ Range[ 180 ], (Count[ IntegerDigits[ #, 2 ], what ]==4)& ]

CROSSREFS

Sequence in context: A109288 A018889 A065728 this_sequence A129387 A111151 A059144

Adjacent sequences: A014309 A014310 A014311 this_sequence A014313 A014314 A014315

KEYWORD

nonn,base,easy

AUTHOR

Al Black (gblack(AT)nol.net)

EXTENSIONS

Extension and program by Olivier Gerard

page 1

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.


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