id:A145561 - OEIS Search Results

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Alternating row sums of triangle A049029 (S2(5)).

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1, 4, 31, 359, 5546, 107249, 2492701, 67693534, 2103854581, 73651161959, 2868077514776, 122980857764819, 5758029769553101, 292305762924889804, 15992593021331060611, 938143525674896325299, 58739433900424758545186, 3910020681156059085488189 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n)=sum((-1)^(m+1)A049029(n,m),m=1..n), n>=1.` `E.g.f.: (from Jabotinsky structure): 1-exp(1-1/(1-4x)^(1/4)).`
	CROSSREFS	`A049120 (row sums).` `Sequence in context: A129271 A136728 A102757 this_sequence A086677 A016036 A000314` `Adjacent sequences: A145558 A145559 A145560 this_sequence A145562 A145563 A145564`
	KEYWORD	`nonn,easy`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de) Oct 17 2008`

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

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