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!)
A079301 Number of minimal Brauer chains for n. 8
1, 1, 1, 1, 2, 2, 5, 1, 3, 4, 15, 3, 9, 14, 4, 1, 2, 7, 31, 6, 26, 40, 4, 4, 13, 22, 5, 23, 114, 12, 64, 1, 2, 4, 43, 12, 33, 87, 18, 8, 20, 78, 4, 69, 14, 8, 183, 5, 11, 34, 4, 35, 171, 16, 139, 32, 148 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

In a general addition chain, each element > 1 is a sum of two previous elements. In a Brauer chain, each element > 1 is a sum of the immediately previous element and another previous element.

LINKS

D. W. Wilson, Table of n, a(n) for n = 1..1024

Eric Weisstein's World of Mathematics, Brauer Chain

EXAMPLE

7 has a(7) = 5 minimal Brauer chains: (1,2,3,4,7), (1,2,3,5,7), (1,2,3,6,7), (1,2,4,5,7), (1,2,4,6,7).

CROSSREFS

Sequence in context: A173169 A016586 A073690 * A079300 A128932 A286150

Adjacent sequences:  A079298 A079299 A079300 * A079302 A079303 A079304

KEYWORD

nonn

AUTHOR

David W. Wilson, Feb 09 2003

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 August 2 15:26 EDT 2021. Contains 346428 sequences. (Running on oeis4.)