id:A127605 - OEIS Search Results

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a[n]=2^(2*n*n)*product(product(sin(i*Pi/(2*n+1))^2+ sin(j*Pi/(2*n+1))^2,j=1..n),i=1..n).

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1, 6, 500, 463736, 4614756624, 485005220494432, 533978739649683515200, 6129678550595328659594928000, 731483813983605533022316212534132992, 905665520470954445892575061753881157482726912 (list; graph; listen)

	OFFSET	`0,2`
	MAPLE	`for n from 0 to 12 do a[n]:=2^(2nn)product(product(sin(iPi/(2n+1))^2+ sin(jPi/(2*n+1))^2, j=1..n), i=1..n) od: seq(round(evalf(a[n], 300)), n=0..12);`
	CROSSREFS	`Cf. A004003.` `Sequence in context: A006712 A099057 A123278 this_sequence A013975 A103520 A003395` `Adjacent sequences: A127602 A127603 A127604 this_sequence A127606 A127607 A127608`
	KEYWORD	`nonn`
	AUTHOR	`Miklos Kristof (kristmikl(AT)freemail.hu), Apr 03 2007`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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