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Search: id:A159756
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| 0, 1, -1, 4, -1, -2, 12, 0, -3, -3, 32, 4, -4, -5, -4, 80, 16, -4, -8, -7, -5, 192, 48, 0, -12, -12, -9, -6, 448, 128, 16, -16, -20, -16, -11, -7, 1024, 320, 64, -16, -32, -28, -20, -13, -8, 2304, 768, 192, 0, -48, -48, -36, -24, -15, -9
(list; table; graph; listen)
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OFFSET
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0,4
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FORMULA
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Sum_{k=0..n} T(n,k) = A045618(n-2) for n>=2 . T(2n,n)=-A001787(n).
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EXAMPLE
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Triangle begins : 0 ; 1,-1 ; 4,-1,-2 ; 12,0,-3,-3 ; 32,4,-4,-5,-4 ; ...
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CROSSREFS
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Cf. A062111, A152920
Sequence in context: A084604 A152253 A024569 this_sequence A110559 A030441 A072033
Adjacent sequences: A159753 A159754 A159755 this_sequence A159757 A159758 A159759
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KEYWORD
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sign,tabl
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AUTHOR
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Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Apr 21 2009
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