0,3
G.f.: x(1+x^2)/(1-x)^2 - Paul Barry (pbarry(AT)wit.ie), Feb 28 2003
Cf. A004277.
Sequence in context: A055964 A055966 A087113 this_sequence A119432 A005843 A076032
Adjacent sequences: A004272 A004273 A004274 this_sequence A004276 A004277 A004278
easy,nonn
njas
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