id:A036654 - OEIS Search Results

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Triangle of series-parallel numbers.

+0
2

1, 1, 1, 2, 2, 2, 4, 6, 8, 8, 10, 18, 34, 52, 52, 24, 58, 136, 288, 472, 472, 66, 186, 538, 1424, 3224, 5504, 5504, 180, 614, 2080, 6648, 18888, 44712, 78416, 78616, 522, 2034, 7970, 29700, 101340, 302096, 738448, 1320064, 1320064 (list; table; graph; listen)

	OFFSET	`0,4`
	REFERENCES	`J. Riordan, An Introduction to Combinatorial Analysis, Wiley, 1958, p. 142.`
	EXAMPLE	`1; 1 1; 2 2 2; 4 6 8 8;...`
	CROSSREFS	`Sequence in context: A002722 A093393 A090858 this_sequence A010558 A060827 A064355` `Adjacent sequences: A036651 A036652 A036653 this_sequence A036655 A036656 A036657`
	KEYWORD	`nonn,easy,tabl,nice`
	AUTHOR	`njas`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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