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Search: id:A038225
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| 1, 4, 30, 246, 2037, 16886, 139997, 1160693, 9623140, 79784098, 661478734, 5484227157, 45468956106, 376976720745, 3125460977225, 25912757426660, 214839027697334, 1781200165693270, 14767680082482085, 122436758775876478
(list; graph; listen)
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OFFSET
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0,2
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LINKS
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F. v. Lamoen, Wave sequences
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FORMULA
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Let v(4)=(1, 1, 1, 1), let M(4) be the 4 X 4 matrix m(i, j) =min(i, j); then a(n)= min ( v(4)*M(4)^n) - Benoit Cloitre (benoit7848c(AT)orange.fr), Oct 03 2002
GF=(1 - (-3 + q)*(-2 + q)*q)/((-1 + q)*(-1 + (-3 + q)^2*q)) - Wouter Meeussen, Mar 19 2005
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PROGRAM
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(PARI) k=4; M(k)=matrix(k, k, i, j, min(i, j)); v(k)=vector(k, i, 1); a(n)=vecmin(v(k)*M(k)^n)
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CROSSREFS
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Sequence in context: A082144 A137971 A052604 this_sequence A086452 A091527 A102307
Adjacent sequences: A038222 A038223 A038224 this_sequence A038226 A038227 A038228
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KEYWORD
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nonn,easy
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AUTHOR
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Floor van Lamoen (fvlamoen(AT)hotmail.com)
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EXTENSIONS
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More terms from David Wasserman (dwasserm(AT)earthlink.net), Feb 16 2002
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