id:A026020 - OEIS Search Results

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C(4n,n) - C(4n,n-3).

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1, 4, 28, 219, 1804, 15314, 132572, 1163565, 10316924, 92195488, 829016968, 7492106505, 67991427828, 619193535380, 5655829748520, 51794730347745, 475390078267356, 4371917301657488, 40276635724273936 (list; graph; listen)

	OFFSET	`0,2`
	CROSSREFS	`a(n) = T(4n, n), where T is the array defined in A026009.` `Bisections are A026012 and A026016.` `Sequence in context: A085363 A039741 A130185 this_sequence A026033 A005810 A121203` `Adjacent sequences: A026017 A026018 A026019 this_sequence A026021 A026022 A026023`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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

AT&T Labs Research