%I #4 Feb 24 2012 12:50:48
%S 2,12,310,15960,1517098,224269540,48197922526,14130438821296,
%T 5428021401209682,2643726413982309052,1592189299187949292422,
%U 1161629303960888128771592,1009558061720938140021739386
%N arcsin(tan(x)*arcsin(x))=2/2!*x^2+12/4!*x^4+310/6!*x^6+15960/8!*x^8...
%K nonn
%O 0,1
%A Patrick Demichel (patrick.demichel(AT)hp.com)