0,2
G.f.: 1 / [1 - x(6+7y)].
Sequence in context: A037411 A025626 A027021 this_sequence A041080 A042091 A047181
Adjacent sequences: A013624 A013625 A013626 this_sequence A013628 A013629 A013630
tabl,nonn,easy
njas
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