A103424 - OEIS

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A103424

1+sinh(2x).

1, 2, 0, 8, 0, 32, 0, 128, 0, 512, 0, 2048, 0, 8192, 0, 32768, 0, 131072, 0, 524288, 0, 2097152, 0, 8388608, 0, 33554432, 0, 134217728, 0, 536870912, 0, 2147483648, 0, 8589934592, 0, 34359738368, 0, 137438953472, 0, 549755813888, 0, 2199023255552 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`Binomial transform is A103425.`
	FORMULA	`G.f.: (1+2x-4x^2)/(1-4x^2); E.g.f.: 1+sinh(2x); a(n)=0^n+(2^n-(-2)^n)/2; a(n)=sum{k=0..n, binomial(n, k)(-1)^(k(n-k))}.`
	CROSSREFS	`Sequence in context: A167029 A094030 A199573 * A109573 A159810 A199268` `Adjacent sequences: A103421 A103422 A103423 * A103425 A103426 A103427`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Feb 05 2005`

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Last modified February 17 03:18 EST 2012. Contains 205978 sequences.