id:A121079 - OEIS Search Results

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Sum_{i=0..n} C(n,i)^2*i!*4^i + 2^n*n!.

+0
2

2, 7, 57, 757, 13889, 322021, 8962225, 289928549, 10666353409, 439225736005, 19999574572721, 997265831223685, 54028099173536449, 3159178743189436709, 198259676112757095985, 13289233274778582230821, 947420482287986880154625, 71574264415491967142194309 (list; graph; listen)

	OFFSET	`0,1`
	REFERENCES	`Z. Li, Z. Li and Y. Cao, Enumeration of symplectic and orthogonal injective partial transformations, Discrete Math., 306 (2006), 1781-1787.`
	CROSSREFS	`Cf. A102773, A121080.` `Adjacent sequences: A121076 A121077 A121078 this_sequence A121080 A121081 A121082` `Sequence in context: A034939 A048898 A034935 this_sequence A105183 A023364 A120952`
	KEYWORD	`nonn`
	AUTHOR	`njas, Aug 11 2006`

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

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