login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A156562 a(n)=(-1)^n*sum(k=1,n,(-1)^k*A054353(k)) 0
1, 2, 3, 3, 4, 5, 5, 7, 7, 8, 9, 10, 10, 11, 12, 12, 13, 14, 15, 15, 17, 16, 18, 18, 19, 20, 21, 21, 22, 23, 23, 24, 25, 25, 27, 27, 28, 29, 30, 30, 31, 32, 32, 34, 34, 35, 36, 36, 37, 38, 38, 39, 40, 41, 41, 43, 43, 44, 44, 46, 45, 48, 47, 49, 49, 51, 50, 52, 52, 53, 53, 55, 54 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..73.

CROSSREFS

Sequence in context: A114539 A238746 A272611 * A290736 A007998 A203899

Adjacent sequences:  A156559 A156560 A156561 * A156563 A156564 A156565

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Feb 10 2009

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 5 19:02 EDT 2020. Contains 335473 sequences. (Running on oeis4.)