2,2

J. Denes, Some combinatorial properties of transformations and their connections with the theory of graphs, J. Combin. Theory, 9 (1970), 108-116.

Cf. A086373.

Adjacent sequences: A001688 A001689 A001690 this_sequence A001692 A001693 A001694

Sequence in context: A104224 A099676 A051606 this_sequence A058421 A128876 A105974

nonn

njas