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Search: id:A049947
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A049947 a(n)=a(1)+a(2)+...+a(n-1)+a(m), where m=2n-2-2^(p+1), and 2^p<n-1<=2^(p+1). +0
1
1, 1, 4, 7, 20, 34, 74, 175, 491, 808, 1622, 3271, 6683, 13999, 30461, 71650, 200951, 330253, 660512, 1321051, 2642243, 5285119, 10572701, 21156130, 42369911, 84998425, 170987648, 345939364, 707749739, 1479341773, 3219624485 (list; graph; listen)
OFFSET

1,3

CROSSREFS

Adjacent sequences: A049944 A049945 A049946 this_sequence A049948 A049949 A049950

Sequence in context: A045548 A090879 A084404 this_sequence A066345 A026570 A111955

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified October 15 09:18 EDT 2008. Contains 145015 sequences.


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