0,4

n! * { 1 - sum[ k=0..floor(n/3) ] (-1)^k / (3^k * k!) }.

Sequence in context: A074092 A003445 A071007 this_sequence A154626 A003305 A076625

Adjacent sequences: A027614 A027615 A027616 this_sequence A027618 A027619 A027620

nonn

Joe Keane (jgk(AT)jgk.org)