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A066381
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Sum_{k=0..n} C(4*n,k).
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2
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1, 5, 37, 299, 2517, 21700, 190051, 1683218, 15033173, 135142796, 1221246132, 11083374659, 100946732307, 922205369324, 8446802334994, 77542088287444, 713250450657109, 6572130378649468, 60652194138406780, 560522209086365852
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Harry J. Smith, Table of n, a(n) for n=0,...,150
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PROG
| (PARI) { for (n=0, 150, a=0; for (k=0, n, a+=binomial(4*n, k)); write("b066381.txt", n, " ", a) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Feb 12 2010]
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CROSSREFS
| Cf. A032443, A066380.
Sequence in context: A164595 A046636 A091126 * A078253 A006442 A084212
Adjacent sequences: A066378 A066379 A066380 * A066382 A066383 A066384
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Dec 23 2001
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