2977676

Appears in sequences

• Numbers n such that n + sopf(n) + rad(n) = m and m - sopf(m) - rad(m) = n, where sopf(n) is the sum of the distinct primes dividing n and rad(n) is the squarefree kernel of n.at n=27A279935
• Self-convolution of n-th antidiagonal of the natural number array (so named in the Comments section of A000027).at n=25A387429