1541005

Appears in sequences

• Numbers n with the property that it is possible to write the base 2 expansion of n as concat(a_2,b_2), with a_2>0 and b_2>0 such that, converting a_2 and b_2 to base 10 as a and b, we have antisigma(a) + antisigma(b) = n.at n=22A259670
• The number of vertices in a Farey diagram of order (n,n).at n=13A358883