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A006987
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Binomial coefficients: C(n,k), 2 <= k <= n-2, sorted, duplicates removed.
(Formerly M4084)
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14
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6, 10, 15, 20, 21, 28, 35, 36, 45, 55, 56, 66, 70, 78, 84, 91, 105, 120, 126, 136, 153, 165, 171, 190, 210, 220, 231, 252, 253, 276, 286, 300, 325, 330, 351, 364, 378, 406, 435, 455, 462, 465, 495, 496, 528, 560, 561, 595, 630, 666, 680, 703, 715, 741, 780, 792, 816, 820
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Complement of A137905; a(n) > A058084(a(n)). [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 20 2009]
Or numbers l which, for the first time, appear in m-th row of the Laplace triangle for m<l. [From Vladimir Shevelev (shevelev(AT)bgu.ac.il), Apr 28 2010]
Appears to be the set of simplex numbers of order>2 and dimension>1 [From Dylan Hamilton (Phalarisbull(AT)gmail.com), Nov 05 2010]
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REFERENCES
| N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
| T. D. Noe, Table of n, a(n) for n=1..1000
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MATHEMATICA
| Take[ Union[ Flatten[ Table[ Binomial[n, k], {n, 2, 45}, {k, 2, n - 2}]]], 58] (from Robert G. Wilson v May 25 2004)
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CROSSREFS
| Sequence in context: A166160 A162731 A145286 * A157937 A080255 A168102
Adjacent sequences: A006984 A006985 A006986 * A006988 A006989 A006990
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), R. G. Wilson v (rgwv(AT)rgwv.com)
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EXTENSIONS
| More terms from David W. Wilson (davidwwilson(AT)comcast.net).
Spelling corrected by Jason G. Wurtzel (j_seq(AT)wurtzel.com), Aug 22 2010
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