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Search: id:A133147
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A133147 a(n) = a(n-1) + SUM(a(2^k): 0 <= k < log2(n)), a(1) = 1. +0
1
1, 2, 5, 8, 19, 30, 41, 52, 115, 178, 241, 304, 367, 430, 493, 556, 1175, 1794, 2413, 3032, 3651, 4270, 4889, 5508, 6127, 6746, 7365, 7984, 8603, 9222, 9841, 10460, 21539, 32618, 43697, 54776, 65855, 76934, 88013, 99092, 110171, 121250, 132329 (list; graph; listen)
OFFSET

1,2

EXAMPLE

a(7) = a(6)+a(1)+a(2)+a(4) = 30+1+2+8 = 41;

a(8) = a(7)+a(1)+a(2)+a(4) = 41+1+2+8 = 52;

a(9) = a(8)+a(1)+a(2)+a(4)+a(8) = 52+1+2+8 +52 = 115;

a(10) = a(9)+a(1)+a(2)+a(4)+a(8) = 115+1+2+8 +52 = 178.

CROSSREFS

Sequence in context: A152006 A032063 A037233 this_sequence A082630 A025078 A055614

Adjacent sequences: A133144 A133145 A133146 this_sequence A133148 A133149 A133150

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Dec 16 2007

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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