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Search: id:A085838
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| A085838 |
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Triangle T(n,k) read by rows; given by [0,1,0,1,0,1,0,1,...] DELTA [1,1,1,2,1,3,1,4,1,5,1,6,...], where DELTA is Deleham's operator defined in A084938. |
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+0
4
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| 1, 0, 1, 0, 1, 2, 0, 1, 5, 5, 0, 1, 9, 22, 15, 0, 1, 14, 60, 98, 52, 0, 1, 20, 130, 366, 457, 203, 0, 1, 27, 245, 1031, 2190, 2254, 877, 0, 1, 35, 420, 2436, 7652, 13251, 11788, 4140, 0, 1, 44, 672, 5096, 21862, 55499, 82288, 65330, 21147, 0, 1, 54, 1020
(list; table; graph; listen)
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OFFSET
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0,6
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FORMULA
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Sum_{k, 0<=k<=n}(-x)^(n-k)*T(n,k)=A090365(n), A000110(n), A000012(n), A010892(n) for x=-1, 0, 1, 2 . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Oct 26 2006
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EXAMPLE
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1; 0,1; 0,1,2; 0,1,5,5; 0,1,9,22,15; ...
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CROSSREFS
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Cf. A084938, A085791.
Diagonals : A000007, A000012, A000096, A000110. Row sums : A090365
Sequence in context: A085650 A109450 A086810 this_sequence A094456 A010028 A151860
Adjacent sequences: A085835 A085836 A085837 this_sequence A085839 A085840 A085841
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KEYWORD
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nonn,tabl
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Aug 16 2003
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