A013031 - OEIS

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A013031

sec(sinh(x)+sin(x))=1+4/2!*x^2+80/4!*x^4+3928/6!*x^6+359040/8!*x^8...

1, 4, 80, 3928, 359040, 52717856, 11352019840, 3370401007488, 1319560185804800, 658698869874201088, 408325769541831280640, 307740770628961995577344, 277115224743231975378370560 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	CROSSREFS	`Sequence in context: A012057 A102063 A002436 * A012923 A012922 A013090` `Adjacent sequences: A013028 A013029 A013030 * A013032 A013033 A013034`
	KEYWORD	`nonn`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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