id:A001046 - OEIS Search Results

Search: id:A001046

Displaying 1-1 of 1 results found.

page 1

a(n) = n(n-1)a(n-1)/2 + a(n-2).
(Formerly M1811 N0717)

+0
1

1, 1, 2, 7, 44, 447, 6749, 142176, 3987677, 143698548, 6470422337, 356016927083, 23503587609815, 1833635850492653, 166884365982441238, 17524692064006822643, 2103129932046801158398, 286043195450428964364771 (list; graph; listen)

	OFFSET	`0,3`
	EXAMPLE	`a(4) = 437/2 + 2 = 44.`
	CROSSREFS	`Cf. A001052.` `Sequence in context: A000155 A077045 A128579 this_sequence A107354 A006118 A083670` `Adjacent sequences: A001043 A001044 A001045 this_sequence A001047 A001048 A001049`
	KEYWORD	`nonn,easy`
	AUTHOR	`njas`
	EXTENSIONS	`More terms from James A. Sellers (sellersj(AT)math.psu.edu), Oct 05 2000`

page 1

Search completed in 0.002 seconds

Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research