0,3

Table of n, a(n) for n=0..19.

Cf. A180070.

Sequence in context: A163895 A309016 A302652 * A034882 A175943 A228816

Adjacent sequences: A180068 A180069 A180070 * A180072 A180073 A180074

nonn,hard,more

R. H. Hardin, Aug 09 2010

a(17)-a(18) from Donovan Johnson, Oct 11 2010

a(19) from Bert Dobbelaere, Aug 31 2020

a(0)-a(1) from Alois P. Heinz, Sep 02 2020

approved