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Search: id:A130167
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| 1, 0, 1, 0, 1, 1, 0, 2, 2, 1, 0, 6, 5, 3, 1, 0, 22, 16, 9, 4, 1, 0, 92, 60, 31, 14, 5, 1, 0, 426, 252, 120, 52, 20, 6, 1, 0, 2146, 1160, 510, 209, 80, 27, 7, 1, 0, 11624, 5776, 2348, 904, 335, 116, 35, 8, 1, 0, 67146, 30832, 11610, 4184, 1481, 507, 161, 44, 9, 1
(list; table; graph; listen)
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OFFSET
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0,8
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COMMENT
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Triangle T(n,k), 0<=k<=n, read by rows given by [0,1,1,2,1,3,1,4,1,5,1,6,1,...] DELTA [1,0,0,0,0,0,0,...] where DELTA is the operator defined in A084938 .
Modulo 2, this sequence gives A106344 . [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Dec 18 2008]
A154380*A130595 as infinite lower triangular matrices. [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Jan 13 2009]
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FORMULA
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Sum_{k, 0<=k<=n}T(n,k)=A000110(n).
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EXAMPLE
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Triangle begins:
1;
0, 1;
0, 1, 1;
0, 2, 2, 1;
0, 6, 5, 3, 1;
0, 22, 16, 9, 4, 1;
0, 92, 60, 31, 14, 5, 1 ;...
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CROSSREFS
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Cf. A074664.
Sequence in context: A064045 A110314 A152882 this_sequence A084938 A135898 A131182
Adjacent sequences: A130164 A130165 A130166 this_sequence A130168 A130169 A130170
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KEYWORD
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nonn,tabl
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AUTHOR
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Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Aug 03 2007
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