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A047885 Array a(m,n) = pi(m+n)-pi(m)-pi(n) read by antidiagonals, where pi() = A000720 (m,n >= 0). +0
2
0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, -1, 0, -1, 0, 0, 0, 0, 0, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, -1, -2, -1, -2, -1, -2, -1, 0, 0 (list; table; graph; listen)
OFFSET

0,59

EXAMPLE

Beginning of array is

0 0 0 0 0 0 0 0 ...

0 1 1 0 1 0 1 0 ...

0 1 0 0 0 0 -1 ...

0 0 0 -1 0 -1 -1 ...

CROSSREFS

Cf. A047886.

Sequence in context: A143668 A029445 A107393 this_sequence A072731 A129174 A129175

Adjacent sequences: A047882 A047883 A047884 this_sequence A047886 A047887 A047888

KEYWORD

sign,tabl,easy,nice

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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