id:A120650 - OEIS Search Results

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A120650

Triangle read by rows: numbers of isomers of unbranched a-4-catapolynonagons.

+0
1

1, 1, 1, 1, 1, 1, 3, 4, 4, 1, 12, 21, 19, 4, 1, 63, 138, 123, 40, 7, 1, 342, 864, 834, 330, 73, 7, 1, 1998, 5526, 5796, 2814, 747, 112, 10, 1, 11772, 34992, 40014, 22464, 7218, 1359, 163, 10, 1, 70308, 221724, 274590, 174798, 65583, 15372, 2307, 220, 13, 1, 420552, 1399680, 1867320, 1321920, 567540, 157284, 29100, 3540, 289, 13, 1 (list; table; graph; listen)

	OFFSET	`0,7`
	REFERENCES	`J. Brunvoll, S. J. Cyvin and B. N. Cyvin, Isomer enumeration of polygonal systems..., J. Molec. Struct. (Theochem), 364 (1996), 1-13.`
	EXAMPLE	`Triangle begins` `1` `1 1` `1 1 1` `3 4 4 1` `12 21 19 4 1` `63 138 123 40 7 1` `342 864 834 330 73 7 1`
	CROSSREFS	`Columns give A121123-A121127.` `Adjacent sequences: A120647 A120648 A120649 this_sequence A120651 A120652 A120653` `Sequence in context: A054733 A120649 A001009 this_sequence A103121 A081573 A106290`
	KEYWORD	`nonn,tabl`
	AUTHOR	`njas, Aug 18 2006`

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Last modified October 12 11:54 EDT 2008. Contains 144829 sequences.

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