id:A139134 - OEIS Search Results

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a(n) = n-th derivative of Sec(Exp(z)-1) at z=0.

+0
1

1, 0, 1, 3, 12, 65, 417, 3094, 26243, 250371, 2652754, 30910935, 392895789, 5409783392, 80214503397, 1274329677391, 21594115259540, 388790596531173, 7411710847692157, 149142571391245758, 3159081458947418511 (list; graph; listen)

	OFFSET	`0,4`
	FORMULA	`E.G.F. = sec(exp(z)-1)`
	MATHEMATICA	`Table[D[Sec[Exp[z] - 1], {x, n}] /. z -> 0, {n, 0, 30}]`
	CROSSREFS	`Cf. A080832.` `Sequence in context: A052757 A029851 A111262 this_sequence A109577 A144297 A007017` `Adjacent sequences: A139131 A139132 A139133 this_sequence A139135 A139136 A139137`
	KEYWORD	`easy,nonn`
	AUTHOR	`Richard Chapling (r.chappers(AT)gmail.com), Jun 05 2008`

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

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