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1, 0, 2, 1, -1, 5, 1, 4, -5, 15, 4, 2, 17, -23, 52, 11, 17, 2, 79, -109, 203, 41, 46, 80, -20, 397, -544, 877, 162, 198, 208, 418, -244, 2134, -2876, 4140, 715, 841, 1031, 994, 2389, -2053, 12196, -16113, 21147, 3425, 4014, 4663, 5771, 4950, 14693, -15859, 73798, -95495, 115975
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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COMMENTS
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Row sums and right border = the Bell numbers (A000110) starting (1, 2, 5, 15, 52, 203,...).
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LINKS
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Table of n, a(n) for n=1..55.
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FORMULA
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Binomial transform of the Aitken array A011971.
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EXAMPLE
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First few rows of the triangle are:
1;
0, 2;
1, -1, 5;
1, 4, -5, 15;
4, 2, 17, -23, 52;
11, 17, 2, 79, -109, 203;
41, 46, 80, -20, 397, -544, 877;
...
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CROSSREFS
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Cf. A011971, A000110.
Sequence in context: A141323 A210876 A174785 * A342916 A339966 A022661
Adjacent sequences: A136786 A136787 A136788 * A136790 A136791 A136792
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KEYWORD
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tabl,sign
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AUTHOR
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Gary W. Adamson, Jan 21 2008
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STATUS
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approved
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