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A125802
Column 4 of table
A125800
; also equals row sums of matrix power
A078122
^4.
5
1, 5, 35, 485, 15200, 1144664, 215155493, 103674882878, 130648799730635, 437302448840089232, 3936208033244539574405, 96244898501021613327012635, 6446494058446469307795159512465, 1191218783863555524342034469450207222
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OFFSET
0,2
COMMENTS
Triangle
A078122
shifts left one column under matrix cube and is related to partitions into powers of 3.
LINKS
Table of n, a(n) for n=0..13.
PROG
(PARI) a(n)=local(p=4, q=3, 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.
A125800
,
A078122
; other columns:
A078125
,
A078124
,
A125801
,
A125803
.
Sequence in context:
A247596
A325408
A097492
*
A034217
A011556
A361055
Adjacent sequences:
A125799
A125800
A125801
*
A125803
A125804
A125805
KEYWORD
nonn
AUTHOR
Paul D. Hanna
, Dec 10 2006
STATUS
approved
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Last modified September 18 08:36 EDT 2024. Contains 375997 sequences. (Running on oeis4.)