1692600

Appears in sequences

• For a rational number p/q let f(p/q) = p*q divided by the sum of digits of p and q; a(n) is obtained by iterating f, starting at n/1, until an integer is reached, or if no integer is ever reached then a(n) = 0.at n=24A059175
• Numbers that can be expressed as the difference of the squares of primes in exactly fourteen distinct ways.at n=20A092010
• Square rings obtained by adding four identical cuboids from A169938, a(n) = 4*n*(n+1)*(n*(n+1)+1).at n=25A288486