1,1
a(n) = 2*A053173(n).
Sequence in context: A012868 A185713 A129642 * A177174 A139658 A054824
Adjacent sequences: A054464 A054465 A054466 * A054468 A054469 A054470
nonn
Ralf W. Grosse-Kunstleve (rwgk(AT)cci.lbl.gov), Mar 26 2000