id:A054345 - OEIS Search Results

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Number of inequivalent sublattices of index n in square lattice, where two lattices are considered equivalent if one can be rotated to give the other.

+0
5

1, 1, 2, 2, 4, 3, 6, 4, 8, 7, 8, 6, 14, 7, 12, 10, 16, 9, 20, 10, 18, 16, 18, 12, 30, 13, 20, 20, 28, 15, 30, 16, 32, 24, 26, 20, 46, 19, 30, 26, 38, 21, 48, 22, 42, 33, 36, 24, 62, 29, 38, 34, 46, 27, 60, 30, 60, 40, 44, 30, 70, 31, 48, 52, 64, 33, 72, 34, 60, 48, 60 (list; graph; listen)

	OFFSET	`0,3`
	LINKS	`Index entries for sequences related to sublattices`
	EXAMPLE	`For n = 1, 2, 3, 4 the sublattices are generated by the rows of:` `[1 0] [2 0] [2 0] [3 0] [3 0] [4 0] [4 0] [2 0] [2 0]` `[0 1] [0 1] [1 1] [0 1] [1 1] [0 1] [1 1] [0 2] [1 2]`
	CROSSREFS	`Cf. A003051, A001615, A054346, A054384.` `Sequence in context: A060681 A060766 A029578 this_sequence A060367 A062968 A053197` `Adjacent sequences: A054342 A054343 A054344 this_sequence A054346 A054347 A054348`
	KEYWORD	`nonn,easy,nice`
	AUTHOR	`njas, May 06 2000`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

AT&T Labs Research