The On-Line Encyclopedia of Integer Sequences (OEIS)

A012556 revision #1

A012556

arcsin(sinh(x)*arctan(x))=2/2!*x^2-4/4!*x^4+230/6!*x^6-7880/8!*x^8...

2, -4, 230, -7880, 922378, -104579660, 22872643950, -5494080273552, 1980593407445778, -817099673512164244, 445251089168585478902, -279905701143388803184984, 216483300093818109473976346

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,1

REFERENCES

LINKS

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

CROSSREFS

Sequence in context: A012666 A012612 A012560 * A329418 A018729 A009800

Adjacent sequences: A012553 A012554 A012555 * A012557 A012558 A012559

KEYWORD

sign,done,new

AUTHOR

Patrick Demichel (dml@hpfrcu03.france.hp.com)

STATUS

approved