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A117200
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Inverse of number triangle (1,x)+(x,x^2)+(x^2,x^3).
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2
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1, -1, 1, -1, 0, 1, 1, -1, 0, 1, 0, 0, 0, 0, 1, 2, -1, -1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, -1, 1, 0, -1, 0, 0, 0, 1, 1, 0, -1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -3, 2, 1, -1, 0, -1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 0,16
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COMMENTS
| Inverse of A117198. Row sums are A117201.
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EXAMPLE
| Triangle begins
1,
-1, 1,
-1, 0, 1,
1, -1, 0, 1,
0, 0, 0, 0, 1,
2, -1, -1, 0, 0, 1,
0, 0, 0, 0, 0, 0, 1,
-1, 1, 0, -1, 0, 0, 0, 1,
1, 0, -1, 0, 0, 0, 0, 0, 1
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CROSSREFS
| Sequence in context: A204431 A143809 A056559 * A107015 A015374 A164058
Adjacent sequences: A117197 A117198 A117199 * A117201 A117202 A117203
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KEYWORD
| sign,tabl
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AUTHOR
| Paul Barry (pbarry(AT)wit.ie), Mar 02 2006
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