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Search: id:A104974
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| A104974 |
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A Fredholm-Rueppel triangle. |
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+0
2
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| 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1
(list; table; graph; listen)
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OFFSET
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0,1
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COMMENT
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Sequence matrix for A036987(n+1).Riordan array (sum{k>=0, x^(2^k)/x^2}-1/x,x). Row sums are A000523(n+1). Diagonal sums are A070939(n+1), with interpolated zeros. Inverse is A104975.
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FORMULA
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Triangle T(n, k)=if(k<=n, C(n-k) mod 2, 0)
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EXAMPLE
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Rows start {1},{0,1},{1,0,1},{0,1,0,1},{0,0,1,0,1},{0,0,0,1,0,1},{1,0,0,0,1,0,1},...
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CROSSREFS
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Sequence in context: A004539 A023960 A129686 this_sequence A024711 A128174 A096055
Adjacent sequences: A104971 A104972 A104973 this_sequence A104975 A104976 A104977
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KEYWORD
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easy,nonn,tabl
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AUTHOR
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Paul Barry (pbarry(AT)wit.ie), Mar 30 2005
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