A078819 - OEIS

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A078819

140*C(2n,n)/(n+4).

35, 56, 140, 400, 1225, 3920, 12936, 43680, 150150, 523600, 1847560, 6584032, 23661365, 85652000, 312018000, 1142971200, 4207562730, 15557374800, 57750861000, 215145084000, 804104751450, 3014244096864, 11329763650800 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	FORMULA	`a(n) =a(n-1)(4n^2+10n-6)/(n^2+4n) =A078817(n, 3) =7A078820(n)/(2n+1) =140*A000984(n)/(n+4).`
	EXAMPLE	`a(5)=140*C(10,5)/9=3920`
	CROSSREFS	`Cf. A000108, A038629, A078818.` `Sequence in context: A176255 A090877 A048033 * A189554 A095958 A026064` `Adjacent sequences: A078816 A078817 A078818 * A078820 A078821 A078822`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Dec 07 2002`

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Last modified February 17 15:57 EST 2012. Contains 206050 sequences.