1,2

a(n) = Min{k: A080942(k)=n}; A080942(a(n)) = n.

a(1)=A000079(0)=1; a(2)=A080943(1)=3; a(3)=A080946(1)=15.

Cf. A080940, A080941, A007088.

Sequence in context: A118339 A083858 A151241 this_sequence A098102 A144067 A001447

Adjacent sequences: A080945 A080946 A080947 this_sequence A080949 A080950 A080951

nonn,more,base

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 25 2003