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Search: id:A146179
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| A146179 |
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Digit sums of Cullen numbers. |
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+0
1
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| 1, 3, 9, 7, 11, 8, 16, 24, 15, 19, 8, 20, 22, 27, 30, 22, 32, 23, 37, 39, 27, 25, 47, 53, 34, 42, 42, 55, 53, 56, 31, 63, 57, 58, 50, 50, 55, 57, 54, 52, 47, 71, 79, 87, 69, 82, 62, 65, 76, 90, 66, 94, 77, 77, 82, 75, 72, 79, 92, 89, 88, 69, 87, 91, 71, 92, 103, 117, 93, 103
(list; graph; listen)
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OFFSET
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1,2
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EXAMPLE
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The sum of all the digits of the Cullen number 49153 is 22.
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MAPLE
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A002064 := proc(n) n*2^n+1; end: A007953 := proc(n) if n < 10 then n; else add ( d, d=convert(n, base, 10) ) ; fi; end: A146179 := proc(n) A007953(A002064(n)) ; end: seq(A146179(n), n=0..80) ; [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 08 2009]
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CROSSREFS
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Cf. A002064
Sequence in context: A046261 A074806 A010634 this_sequence A137299 A001226 A093498
Adjacent sequences: A146176 A146177 A146178 this_sequence A146180 A146181 A146182
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KEYWORD
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nonn,base
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Oct 27 2008
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 08 2009
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