1,1

Eric Weisstein's World of Mathematics, Further information

Cf. A000058.

Sequence in context: A075442 A082993 A071580 this_sequence A068393 A032053 A086542

Adjacent sequences: A014543 A014544 A014545 this_sequence A014547 A014548 A014549

nonn

Eric Weisstein (eric(AT)weisstein.com)