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A012151 arcsin(tan(tan(x)))=x+5/3!*x^3+121/5!*x^5+7013/7!*x^7+760465/9!*x^9... 0
1, 5, 121, 7013, 760465, 134832389, 35777541385, 13330794123941, 6648498133614241, 4277423006885663237, 3448604325132908471833, 3404386999104410323462373, 4038035818558270717884559921 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..12.

CROSSREFS

Sequence in context: A012190 A012077 A012046 * A012156 A290167 A193479

Adjacent sequences:  A012148 A012149 A012150 * A012152 A012153 A012154

KEYWORD

nonn

AUTHOR

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

STATUS

approved

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Last modified September 21 13:37 EDT 2019. Contains 327253 sequences. (Running on oeis4.)