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A114219
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Number triangle (k-(k-1)*0^(n-k))*[k<=n].
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3
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1, 0, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 2, 3, 1, 0, 1, 2, 3, 4, 1, 0, 1, 2, 3, 4, 5, 1, 0, 1, 2, 3, 4, 5, 6, 1, 0, 1, 2, 3, 4, 5, 6, 7, 1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 0,9
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COMMENTS
| Row sums are n(n-1)/2+1 (essentially A000124). Diagonal sums are A114220. First difference triangle of A077028, when this is viewed as a number triangle.
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FORMULA
| Triangle begins 1; 0, 1; 0, 1, 1; 0, 1, 2, 1; 0, 1, 2, 3, 1; 0, 1, 2, 3, 4, 1; 0, 1, 2, 3, 4, 5, 1; 0, 1, 2, 3, 4, 5, 6, 1; 0, 1, 2, 3, 4, 5, 6, 7, 1;
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CROSSREFS
| Sequence in context: A065364 A168318 A174203 * A119339 A037835 A116433
Adjacent sequences: A114216 A114217 A114218 * A114220 A114221 A114222
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KEYWORD
| easy,nonn,tabl
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AUTHOR
| Paul Barry (pbarry(AT)wit.ie), Nov 18 2005
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