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Search: id:A047886
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| A047886 |
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Triangle read by rows: T(n,k) = pi(n+k)-pi(n)-pi(k), where pi() = A000720 (n >= 0, 0<=k<=n). |
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+0
4
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| 0, 0, 1, 0, 1, 0, 0, 0, 0, -1, 0, 1, 0, 0, 0, 0, 0, 0, -1, -1, -2, 0, 1, 0, -1, -1, -1, -1, 0, 0, -1, -2, -1, -2, -1, -2, 0, 0, -1, -1, -1, -1, -1, -2, -2, 0, 0, 0, -1, 0, -1, -1, -2, -1, -1, 0, 1, 0, 0, 0, -1, -1, -1, -1, 0, 0, 0, 0, 0, -1, -1, -2, -1, -2, -1, -1, -1, -2, 0, 1, 0, -1
(list; table; graph; listen)
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OFFSET
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0,21
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COMMENT
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T(n,0)=0; for n>0: T(n,1)=A010051(n); T(n,n)=-A060208(n). - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Apr 15 2008
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EXAMPLE
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0; 0,1; 0,1,0; 0,0,0,-1; 0,1,0,0,0; 0,0,0,-1,-1,-2; ...
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CROSSREFS
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Cf. A047885.
Adjacent sequences: A047883 A047884 A047885 this_sequence A047887 A047888 A047889
Sequence in context: A147768 A050370 A050374 this_sequence A014944 A015879 A016242
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KEYWORD
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sign,easy,tabl,nice
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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More terms from James A. Sellers (sellersj(AT)math.psu.edu), Dec 22 1999
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