A114157 Column 0 of triangle A114156, which is the matrix inverse of A113370.

1, -1, 3, 6, -8, -501, -13623, -409953, -14544683, -607055209, -29421219966, -1632715832341, -102423931253271, -7182065357683744, -557479490745141406, -47499193522110824640, -4410100445892863617679, -443346294340660384160358

Offset

0,3

Links

Table of n, a(n) for n=0..17.

Prog

(PARI) a(n)=local(P, Q, R, W); P=Mat(1); for(m=2, n+1, W=matrix(m, m); for(i=1, m, for(j=1, i, if(i<3 || j==i || j>m-1, W[i, j]=1, if(j==1, W[i, 1]=1, W[i, j]=(P^(3*j-2))[i-j+1, 1])); )); P=W); (P^-1)[n+1, 1]

Crossrefs

Cf. A114156, A113370.

Sequence in context: A098106 A059361 A103268 * A021275 A281802 A197292

Adjacent sequences: A114154 A114155 A114156 * A114158 A114159 A114160

Keyword

sign

Author

Paul D. Hanna, Nov 15 2005

Status

approved