id:A091356 - OEIS Search Results

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Number of planar partitions of n with exactly 2 rows.

+0
5

1, 2, 5, 9, 18, 30, 53, 85, 139, 215, 336, 504, 760, 1115, 1635, 2351, 3375, 4770, 6725, 9368, 13006, 17885, 24510, 33319, 45139, 60743, 81457, 108610, 144334, 190844, 251542, 330082, 431825, 562710, 731154, 946644, 1222305, 1573155, 2019471 (list; graph; listen)

	OFFSET	`2,2`
	FORMULA	`a(n) = A000990(n)-A000041(n).`
	CROSSREFS	`Column 2 of A091355. Cf. A000219, A091357-A091360.` `Sequence in context: A163734 A019135 A069957 this_sequence A107705 A002883 A077865` `Adjacent sequences: A091353 A091354 A091355 this_sequence A091357 A091358 A091359`
	KEYWORD	`nonn`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Jan 02 2004`

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.

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