A082144 - OEIS

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A082144

A subdiagonal of number array A082137.

1, 4, 30, 224, 1680, 12672, 96096, 732160, 5601024, 42997760, 331082752, 2556051456, 19778969600, 153363087360, 1191302553600, 9268801044480, 72219408138240, 563445537177600, 4401135695953920, 34414895667609600 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`a(n)=(2^(n-1)+0^n/2)C(2n+2, n)`
	EXAMPLE	`a(0)=(2^(-1)+(0^0)/2)C(2,0)=2*(1/2)=1 (use 0^0=1).`
	CROSSREFS	`Cf. A069723, A082143, A082145.` `Sequence in context: A007905 A084976 A000313 * A137971 A052604 A038225` `Adjacent sequences: A082141 A082142 A082143 * A082145 A082146 A082147`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Apr 06 2003`

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Last modified February 17 19:13 EST 2012. Contains 206085 sequences.