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A047858
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Array T read by diagonals; n-th difference of (T(k,n),T(k,n-1),...,T(k,0)) is k+n, for n=1,2,3,...; k=0,1,2,...
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11
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1, 2, 1, 5, 3, 1, 13, 8, 4, 1, 33, 20, 11, 5, 1, 81, 48, 27, 14, 6, 1, 193, 112, 63, 34, 17, 7, 1, 449, 256, 143, 78, 41, 20, 8, 1, 1025, 576, 319, 174, 93, 48, 23, 9, 1, 2305, 1280, 703, 382, 205, 108, 55, 26, 10, 1, 5121, 2816, 1535, 830
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OFFSET
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0,2
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LINKS
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Table of n, a(n) for n=0..58.
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FORMULA
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T(n, k)=2^(k-1)*(k+2n)-n+1 - Benoit Cloitre, Jun 17 2003
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EXAMPLE
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Diagonals: {1}; {2,1}; {5,3,1}; ...
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CROSSREFS
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Row 1 = (1, 2, 5, 13, 33, ...) = A005183.
Row 2 = (1, 3, 8, 20, 48, ...) = A001792.
Sequence in context: A106513 A054446 A164981 * A125171 A048472 A038622
Adjacent sequences: A047855 A047856 A047857 * A047859 A047860 A047861
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KEYWORD
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nonn,tabl
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AUTHOR
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Clark Kimberling
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STATUS
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approved
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