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Search: id:A055807
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| A055807 |
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Array T read by rows: T(i,j)=R(i-j,j), where R(i,0)=1 for i >= 0, R(0,j)=0 for j >= 1, R(i,j)=Sum{R(h,k): 0<=h<=i-1, 0<=k<=j} for i >= 1, j >= 1. |
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+0
10
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| 1, 1, 0, 1, 1, 0, 1, 3, 1, 0, 1, 7, 4, 1, 0, 1, 15, 12, 5, 1, 0, 1, 31, 32, 18, 6, 1, 0, 1, 63, 80, 56, 25, 7, 1, 0, 1, 127, 192, 160, 88, 33, 8, 1, 0, 1, 255, 448, 432, 280, 129, 42, 9, 1, 0, 1, 511, 1024, 1120, 832, 450, 180, 52, 10, 1, 0, 1, 1023
(list; table; graph; listen)
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OFFSET
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0,8
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COMMENT
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Formatted as a triangular array, it is [1, 0, 1, 1, 0, 0, 0, 0, 0, ...] DELTA [0, 1, 0, -1, 1, 0, 0, 0, 0, ...] where DELTA is the operator defined in A084938 . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Nov 05 2006
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EXAMPLE
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Rows: 1; 1,0; 1,1,0; 1,3,1,0; 1,7,4,1,0; ...
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CROSSREFS
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Rows sums: A001519 (odd-indexed Fibonacci numbers).
T(2n, n)=A050146(n). Cf. A050143, A050147, A050148.
Sequence in context: A090181 A085791 A106800 this_sequence A054024 A048993 A112413
Adjacent sequences: A055804 A055805 A055806 this_sequence A055808 A055809 A055810
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KEYWORD
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nonn,tabl
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AUTHOR
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Clark Kimberling (ck6(AT)evansville.edu), May 28 2000
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