1,2

V. A. Liskovets, Some easily derivable sequences, J. Integer Sequences, 3 (2000), #00.2.2.

Average of A000273 and A002499.

Sequence in context: A057865 A121921 A161677 this_sequence A130589 A041591 A001150

Adjacent sequences: A054930 A054931 A054932 this_sequence A054934 A054935 A054936

nonn,easy,more

N. J. A. Sloane (njas(AT)research.att.com), May 24 2000