This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A101926 a(n) = 2^A101925(n). 8
 2, 4, 16, 32, 256, 512, 2048, 4096, 65536, 131072, 524288, 1048576, 8388608, 16777216, 67108864, 134217728, 4294967296, 8589934592, 34359738368, 68719476736, 549755813888, 1099511627776, 4398046511104, 8796093022208 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS a(n) is the numerator of 2^(2*n+1)*(n!)^2/(2*n+1)/(2*n)!. The corresponding denominator is A001803. - Daniel Suteu, Feb 03 2017 LINKS MAPLE denom((binomial(2n, n)*4^-n)/2); # Stephen Crowley, Mar 05 2007 MATHEMATICA Table[Numerator[Beta[1, n + 1, 1/2]], {n, 0, 22}] (* Gerry Martens, Nov 13 2016 *) CROSSREFS Bisection of A036069 and of A086117. Cf. A001803. Sequence in context: A094384 A053038 A001088 * A087965 A074411 A189838 Adjacent sequences:  A101923 A101924 A101925 * A101927 A101928 A101929 KEYWORD nonn AUTHOR Ralf Stephan, Dec 28 2004 EXTENSIONS More terms from Joshua Zucker, May 15 2006 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified October 15 14:04 EDT 2018. Contains 316236 sequences. (Running on oeis4.)