1,1

Table of n, a(n) for n=1..16.

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

2*A054921(n)-A000666(n).

Sequence in context: A181501 A213704 A000171 * A244139 A231031 A061848

Adjacent sequences: A054919 A054920 A054921 * A054923 A054924 A054925

nonn,easy

N. J. A. Sloane, May 24 2000

More terms from Vladeta Jovovic, Jul 17 2000

approved