602640

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 sigma(a)*sigma(b) = n.at n=27A244079
• a(n) = 378*n^2 - 54*n (n>=1).at n=39A305070
• Number of degree-n odd permutations of order dividing 12.at n=10A326242