login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A079492 Nearest integer to Sum(binomial(n,k)/2^(k*(k-1)/2), k = 0 .. n). 1
1, 2, 4, 6, 9, 12, 17, 23, 31, 41, 52, 66, 82, 101, 124, 150, 180, 215, 254, 299, 351, 408, 473, 546, 628, 719, 820, 932, 1055, 1192, 1342, 1508, 1689, 1887, 2104, 2340, 2597, 2876, 3179, 3507, 3863, 4247, 4662, 5108, 5590, 6107, 6663, 7259, 7899, 8583, 9316, 10099 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

D. L. Kreher and D. R. Stinson, Combinatorial Algorithms, CRC Press, 1999, p. 113.

LINKS

Table of n, a(n) for n=0..51.

EXAMPLE

1, 2, 7/2, 45/8, 545/64, 12625/1024, 564929/32768, 49162689/2097152, ...

MAPLE

f := n->add(binomial(n, k)/2^(k*(k-1)/2), k=0..n);

CROSSREFS

Cf. A079491.

Sequence in context: A102379 A238374 A133041 * A173784 A094660 A005690

Adjacent sequences:  A079489 A079490 A079491 * A079493 A079494 A079495

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 20 2003

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified December 20 13:53 EST 2014. Contains 252266 sequences.