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A115454
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Composite positive integers written in base 2.
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1
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100, 110, 1000, 1001, 1010, 1100, 1110, 1111, 10000, 10010, 10100, 10101, 10110, 11000, 11001, 11010, 11011, 11100, 11110, 100000, 100001, 100010, 100011, 100100, 100110, 100111, 101000, 101010, 101100, 101101, 101110, 110000, 110001
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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FORMULA
| A007088(A002808(n))
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MATHEMATICA
| For[n = 2, n < 50, n++, If[Not[PrimeQ[n]], Print[BaseForm[n, 2]]]] (Steinerberger)
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CROSSREFS
| Cf. A002808, A007088, A004676.
Sequence in context: A033828 A162530 A204590 * A122466 A066511 A171222
Adjacent sequences: A115451 A115452 A115453 * A115455 A115456 A115457
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KEYWORD
| base,nonn
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AUTHOR
| Leroy Quet, Jan 22 2006
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EXTENSIONS
| More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Jan 24 2006
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