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A060056 Nonzero numbers in expansion of ((tan(x))^4)/4! in (x^n)/n!. 2
1, 40, 2016, 135680, 11977856, 1351633920, 190346960896, 32769353973760, 6776471542235136, 1658320063181619200, 474140484461265944576, 156647023437347542794240, 59229231136268698009993216 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

FORMULA

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

CROSSREFS

A059419 (fourth column without zeros), A059420.

Sequence in context: A278729 A189550 A300116 * A223177 A140729 A003741

Adjacent sequences:  A060053 A060054 A060055 * A060057 A060058 A060059

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang, Mar 16 2001

STATUS

approved

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Last modified January 18 06:34 EST 2019. Contains 319269 sequences. (Running on oeis4.)