id:A030503 - OEIS Search Results

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Graham-Sloane-type lower bound on the size of a ternary (n,3,3) constant-weight code.

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2, 4, 8, 13, 19, 27, 36, 46, 58, 71, 85, 101, 118, 136, 156, 177, 199, 223, 248, 274, 302, 331, 361, 393, 426, 460, 496, 533, 571, 611, 652, 694, 738, 783, 829, 877, 926, 976, 1028, 1081, 1135, 1191, 1248, 1306, 1366, 1427, 1489, 1553, 1618 (list; graph; listen)

	OFFSET	`3,1`
	LINKS	`M. Svanstrom, A lower bound for ternary constant weight codes, IEEE Trans. on Information Theory, Vol. 43, pp. 1630-1632, Sep. 1997.`
	FORMULA	`a(n) = ceil (binomial (n, w) * 2^w / (2*n + 1))`
	CROSSREFS	`Sequence in context: A030058 A058329 A037380 this_sequence A084684 A011907 A056133` `Adjacent sequences: A030500 A030501 A030502 this_sequence A030504 A030505 A030506`
	KEYWORD	`nonn`
	AUTHOR	`Mattias Svanstrom (mattias(AT)isy.liu.se)`

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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.

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