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A034868
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Left half of Pascal's triangle.
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4
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1, 1, 1, 2, 1, 3, 1, 4, 6, 1, 5, 10, 1, 6, 15, 20, 1, 7, 21, 35, 1, 8, 28, 56, 70, 1, 9, 36, 84, 126, 1, 10, 45, 120, 210, 252, 1, 11, 55, 165, 330, 462, 1, 12, 66, 220, 495, 792, 924, 1, 13, 78, 286, 715, 1287, 1716, 1, 14, 91, 364, 1001, 2002, 3003, 3432, 1, 15
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,4
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LINKS
| Index entries for triangles and arrays related to Pascal's triangle
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EXAMPLE
| 1; 1; 1,2; 1,3; 1,4,6; 1,5,10; 1,6,15,20; ...
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MATHEMATICA
| Flatten[ Table[ Binomial[n, k], {n, 0, 15}, {k, 0, Floor[n/2]}]] (from Robert G. Wilson v (rgwv(AT)rgwv.com), May 28 2005)
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CROSSREFS
| Cf. A007318, A107430.
Cf. A062344, A122366.
Sequence in context: A177687 A142878 A082904 * A050382 A197956 A054072
Adjacent sequences: A034865 A034866 A034867 * A034869 A034870 A034871
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KEYWORD
| nonn,tabf,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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