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Search: id:A147537
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| A147537 |
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Numbers whose binary representation is the concatenation of 2n-1 digits 1 and n digits 0. |
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+0
7
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| 2, 28, 248, 2032, 16352, 131008, 1048448, 8388352, 67108352, 536869888, 4294965248, 34359734272, 274877898752, 2199023239168, 17592186011648, 140737488289792, 1125899906711552, 9007199254478848, 72057594037403648
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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a(n) is the number whose binary representation is A138118(n).
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MATHEMATICA
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Table[FromDigits[Join[Table[1, {2n - 1}], Table[0, {n}]], 2], {n, 1, 20}] [From Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Nov 11 2008]
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CROSSREFS
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Cf. A138118.
Sequence in context: A035601 A001759 A019441 this_sequence A056261 A097353 A092801
Adjacent sequences: A147534 A147535 A147536 this_sequence A147538 A147539 A147540
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KEYWORD
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base,easy,nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Nov 06 2008
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EXTENSIONS
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More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Nov 11 2008
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