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A060056 Nonzero numbers in expansion of ((tan(x))^4)/4! in (x^n)/n!. 2

%I

%S 1,40,2016,135680,11977856,1351633920,190346960896,32769353973760,

%T 6776471542235136,1658320063181619200,474140484461265944576,

%U 156647023437347542794240,59229231136268698009993216

%N Nonzero numbers in expansion of ((tan(x))^4)/4! in (x^n)/n!.

%F a(n)=|A059419(4+2*n)|.

%Y A059419 (fourth column without zeros), A059420.

%K nonn,easy

%O 0,2

%A _Wolfdieter Lang_, Mar 16 2001

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Last modified February 22 06:23 EST 2019. Contains 320389 sequences. (Running on oeis4.)