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A113087 Row sums of triangle A113084, which satisfies the recurrence: A113084(n,k) = [A113084^3](n-1,k-1) + [A113084^3](n-1,k). 1
1, 2, 8, 68, 1252, 51724, 5000468, 1176844012, 696653833108, 1063944196415276, 4273738134967763028, 45828521528368595280876, 1327368163105850592309345044, 104832927462400739554960944906668 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
PROG
(PARI) {a(n)=local(M=matrix(n+1, n+1)); for(r=1, n+1, for(c=1, r, M[r, c]=if(r==c, 1, if(c>1, (M^3)[r-1, c-1])+(M^3)[r-1, c]))); return(sum(k=1, n+1, M[n+1, k]))}
CROSSREFS
Cf. A113084.
Sequence in context: A192550 A157752 A055547 * A322495 A332637 A239843
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Oct 14 2005
STATUS
approved

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Last modified May 26 13:56 EDT 2024. Contains 372826 sequences. (Running on oeis4.)