74671

Appears in sequences

• Number of partitions satisfying 0 < cn(1,5) + cn(2,5) + cn(3,5) and 0 < cn(4,5) + cn(2,5) + cn(3,5).at n=44A039901
• Numbers k such that sigma(triangular(k)) = sigma(k)^2.at n=12A232355
• Numbers k with the property that it is possible to write the base 2 expansion of k 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 + b) = sigma(k).at n=26A258843
• Numbers k such that abs(A328258(k)) = abs(A328258(k+1)).at n=39A348586