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Search: id:A102322
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| A102322 |
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Column 1 of triangular matrix A102320, which that satisfies: T(n,k) = [T^2](n-1,k) when n>k>=0, with T(n,n) = (2*n+1). |
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+0
2
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| 0, 3, 9, 72, 945, 17568, 427770, 12979080, 473981445, 20308813128, 1001231706582, 55927084380552, 3495759750651978, 242012640619081152, 18398411206663695732, 1524754064472700613328, 136890662566189661556525
(list; graph; listen)
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OFFSET
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0,2
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PROGRAM
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(PARI) {a(n)=local(A=Mat([1, 0; 1, 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]=2*j-1, if(j==1, B[i, j]=(A^2)[i-1, 1], B[i, j]=(A^2)[i-1, j])); )); A=B); return(A[n+1, 2])}
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CROSSREFS
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Cf. A102087, A102320.
Sequence in context: A084543 A018564 A004167 this_sequence A018576 A027290 A131496
Adjacent sequences: A102319 A102320 A102321 this_sequence A102323 A102324 A102325
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KEYWORD
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nonn
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AUTHOR
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Paul D. Hanna (pauldhanna(AT)juno.com), Jan 05 2005
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