0,1

a(n) = 2*a(n-1) + 4*a(n-2) + a(n-3)

Sequence in context: A055252 A116414 A115154 this_sequence A050156 A096644 A016115

Adjacent sequences: A051925 A051926 A051927 this_sequence A051929 A051930 A051931

easy,nonn

Stephen G. Penrice (spenrice(AT)ets.org), Dec 19 1999