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Search: id:A027113
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| A027113 |
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Triangular array T given by rows: T(n,0)=1 for n >= 0, T(n,1)=1,T(n,2)=2 for n >= 1 and for n >= 2, T(n,k)=T(n-1,k-3)+T(n-1,k-2)+T(n-1,k-1) for 3<=k<=2n-1, T(n,2n)=T(n-1,2n-3)+T(n-1,2n-2). |
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32
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| 1, 1, 1, 2, 1, 1, 2, 4, 3, 1, 1, 2, 4, 7, 9, 7, 1, 1, 2, 4, 7, 13, 20, 23, 16, 1, 1, 2, 4, 7, 13, 24, 40, 56, 59, 39, 1, 1, 2, 4, 7, 13, 24, 44, 77, 120, 155, 154, 98, 1, 1, 2, 4, 7, 13, 24, 44, 81, 145, 241, 352, 429, 407, 252, 1, 1, 2, 4, 7, 13, 24
(list; graph; listen)
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OFFSET
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1,4
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COMMENT
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The rows are of lengths 1, 3, 5, 7, ...
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EXAMPLE
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1; 1,1,2; 1,1,2,4,3; 1,1,2,4,7,9,7; 1,1,2,4,7,13,20,23,16; ...
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CROSSREFS
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Sequence in context: A160266 A023504 A157905 this_sequence A096470 A085143 A026120
Adjacent sequences: A027110 A027111 A027112 this_sequence A027114 A027115 A027116
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KEYWORD
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nonn,tabf
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AUTHOR
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Clark Kimberling (ck6(AT)evansville.edu)
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