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 A113347 Column 1 of triangle A113345, also equals column 0 of A113350^3. 4
 1, 6, 39, 327, 3556, 48659, 812462, 16136404, 373415239, 9900007028, 296557405704, 9921937128500, 367181525916035, 14906571298831661, 659191947156441025, 31558799717042019635, 1626968083690674214906 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS A113345 is the matrix square of A113340. LINKS PROG (PARI) a(n)=local(A, B); A=matrix(1, 1); A[1, 1]=1; for(m=2, n+2, B=matrix(m, m); for(i=1, m, for(j=1, i, if(i<3 || j==i || j>m-1, B[i, j]=1, if(j==1, B[i, 1]=1, B[i, j]=(A^(2*j-1))[i-j+1, 1])); )); A=B); (A^2)[n+2, 2] CROSSREFS Cf. A113340, A113345, A113346 (column 0), A113348 (column 2), A113349 (column 3); A113350. Sequence in context: A137972 A007322 A058191 * A265953 A246571 A031972 Adjacent sequences:  A113344 A113345 A113346 * A113348 A113349 A113350 KEYWORD nonn AUTHOR Paul D. Hanna, Nov 08 2005 STATUS approved

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Last modified December 12 17:50 EST 2019. Contains 329960 sequences. (Running on oeis4.)