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!)
A125796 Column 6 of table A125790; also equals row sums of matrix power A078121^6. 8
1, 7, 49, 455, 6321, 140231, 5174449, 326603719, 35994670257, 7036275790791, 2470183452677297, 1573137497080468423, 1832597507832323118257, 3932481446278522861786055, 15637033863127787477309461681 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Triangle A078121 shifts left one column under matrix square and is related to partitions into powers of 2.

LINKS

Table of n, a(n) for n=0..14.

PROG

(PARI) a(n)=local(p=6, q=2, A=Mat(1), B); for(m=1, n+1, B=matrix(m, m); for(i=1, m, for(j=1, i, if(j==i || j==1, B[i, j]=1, B[i, j]=(A^q)[i-1, j-1]); )); A=B); return(sum(c=0, n, (A^p)[n+1, c+1]))

CROSSREFS

Cf. A125790, A078121; columns: A002577, A125792, A125793, A125794, A125795; diagonals: A125797, A125798.

Sequence in context: A145358 A195514 A204211 * A135745 A080895 A047899

Adjacent sequences:  A125793 A125794 A125795 * A125797 A125798 A125799

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Dec 10 2006

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 04:19 EDT 2020. Contains 335459 sequences. (Running on oeis4.)