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A012594 sec(arcsinh(x)*exp(x))=1+1/2!*x^2+6/3!*x^3+25/4!*x^4+140/5!*x^5... 0
1, 0, 1, 6, 25, 140, 1225, 11410, 110353, 1260696, 16597745, 233501598, 3534940649, 58867014180, 1060745261433, 20315286728490, 414362268698017, 9016753267197744, 207836963025430369, 5046234392527982902 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..19.

CROSSREFS

Sequence in context: A082430 A136593 A012293 * A242858 A200375 A009464

Adjacent sequences:  A012591 A012592 A012593 * A012595 A012596 A012597

KEYWORD

nonn

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

STATUS

approved

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Last modified July 16 09:13 EDT 2020. Contains 335784 sequences. (Running on oeis4.)