0,1

Tan[ x^2 ] (* [ x^(4n+2) ] *)

Sequence in context: A159280 A087226 A071967 this_sequence A006523 A055968 A074256

Adjacent sequences: A024345 A024346 A024347 this_sequence A024349 A024350 A024351

nonn

R. H. Hardin (rhhardin(AT)att.net)

Extended and signs tested Mar 15 1997 by Olivier Gerard.