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Search: id:A005126
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A005126 2^n + n + 1.
(Formerly M1061)
+0
6
2, 4, 7, 12, 21, 38, 71, 136, 265, 522, 1035, 2060, 4109, 8206, 16399, 32784, 65553, 131090, 262163, 524308, 1048597, 2097174, 4194327, 8388632, 16777241, 33554458, 67108891, 134217756, 268435485, 536870942, 1073741855, 2147483680, 4294967329, 8589934626 (list; graph; listen)
OFFSET

0,1

COMMENT

Binomial transform of (1, 1, 1, 0, 1, 0, 1, 0, 1,...). - Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 20 2007

REFERENCES

S. Plouffe, Approximations de S\'{e}ries G\'{e}n\'{e}ratrices et Quelques Conjectures}, Dissertation, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992.

LINKS

S. Plouffe, Approximations de S\'{e}ries G\'{e}n\'{e}ratrices et Quelques Conjectures}, Dissertation, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992.

S. Plouffe, 1031 Generating Functions and Conjectures, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992.

INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 921

MAPLE

A005126:=-(2-4*z+z**2)/(2*z-1)/(z-1)**2; [Conjectured by S. Plouffe in his 1992 dissertation.]

CROSSREFS

Essentially the same as row sums of A128715.

Sequence in context: A000709 A054161 A023433 this_sequence A054151 A018176 A135460

Adjacent sequences: A005123 A005124 A005125 this_sequence A005127 A005128 A005129

KEYWORD

nonn

AUTHOR

C. L. Mallows (colinm(AT)research.avayalabs.com)

EXTENSIONS

More terms from njas, Sep 28 2007

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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