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A102585
Column 0 of triangular matrix
A102583
, in which row n is formed from the first differences of row (n-1) of its inverse matrix square.
2
1, 1, -2, 13, -209, 7558, -584837, 94047241, -30883147262, 20492965038853, -27310366246742669, 72841632366094705678, -388104936993411191934437, 4126997257143980587638461521, -87552095605182502304219090669762, 3705151846765308253776294449404299133
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OFFSET
0,3
LINKS
Table of n, a(n) for n=0..15.
PROG
(PARI) {a(n)=local(A=Mat(1), B); for(m=2, n+1, B=matrix(m, m); for(i=1, m, for(j=1, i, if(j==i, B[i, j]=1, if(j==1, B[i, j]=(A^-2)[i-1, 1], B[i, j]=(A^-2)[i-1, j]-(A^-2)[i-1, j-1])); )); A=B); return(A[n+1, 1])}
CROSSREFS
Cf.
A102583
,
A102586
.
Sequence in context:
A053598
A193550
A367830
*
A367828
A227746
A078702
Adjacent sequences:
A102582
A102583
A102584
*
A102586
A102587
A102588
KEYWORD
sign
AUTHOR
Paul D. Hanna
, Jan 22 2005
STATUS
approved
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Last modified April 25 08:27 EDT 2024. Contains 371964 sequences. (Running on oeis4.)