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A155031 A154990*A155029 1
1, 0, 1, 0, -1, 1, 0, 0, -1, 1, 0, -1, -1, -1, 1, 0, 0, 0, -1, -1, 1, 0, -1, -1, -1, -1, -1, 1, 0, 0, -1, 0, -1, -1, -1, 1, 0, -1, 0, -1, -1, -1, -1, -1, 1, 0, 0, -1, -1, 0, -1, -1, -1, -1, 1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 0, 0, 0, 0, -1, 0, -1, -1, -1, -1, -1, 1, 0, -1, -1, -1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..82.

EXAMPLE

Table begins:

1,

0,1,

0,-1,1,

0,0,-1,1,

0,-1,-1,-1,1,

0,0,0,-1,-1,1,

0,-1,-1,-1,-1,-1,1,

0,0,-1,0,-1,-1,-1,1,

0,-1,0,-1,-1,-1,-1,-1,1,

MAPLE

(Excel) =if(row()>=column(); if(row()=column(); 1; if(mod(row(); column()); -1; 0)); 0)

CROSSREFS

Sequence in context: A087748 A117446 A101688 * A155029 A134540 A128430

Adjacent sequences:  A155028 A155029 A155030 * A155032 A155033 A155034

KEYWORD

sign,tabl

AUTHOR

Mats Granvik, Jan 19 2009

STATUS

approved

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Last modified August 24 00:29 EDT 2017. Contains 291052 sequences.