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A013320
sec(exp(x)-cos(x))=1+1/2!*x^2+6/3!*x^3+21/4!*x^4+120/5!*x^5...
0
1, 0, 1, 6, 21, 120, 1077, 8918, 83097, 952560, 11790649, 156839430, 2318954253, 37207496040, 637980683277, 11745733936022, 231142374081009, 4825295491430880, 106636356923768497, 2489165244414184326
OFFSET
0,4
CROSSREFS
Sequence in context: A365880 A251593 A012840 * A056308 A081077 A093775
KEYWORD
nonn
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved