id:A082143 - OEIS Search Results

Search: id:A082143

Displaying 1-1 of 1 results found.

page 1

First subdiagonal of number array A082137.

+0
6

1, 3, 20, 140, 1008, 7392, 54912, 411840, 3111680, 23648768, 180590592, 1384527872, 10650214400, 82158796800, 635361361920, 4924050554880, 38233804308480, 297374033510400, 2316387208396800, 18067820225495040 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=(2^(n-1)+0^n/2)C(2n+1, n)`
	EXAMPLE	`a(0)=(2^(-1)+(0^0)/2)C(1,0)=2*(1/2)=1 (use 0^0=1).`
	CROSSREFS	`Cf. A069723, A082144, A082145.` `Sequence in context: A074574 A073514 A163065 this_sequence A009156 A074573 A068571` `Adjacent sequences: A082140 A082141 A082142 this_sequence A082144 A082145 A082146`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Apr 06 2003`

page 1

Search completed in 0.002 seconds

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research