-2272

Appears in sequences

• Expansion of sin(tan(x)*x)/2.at n=4A024248
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of f(i,j) = gcd(prime(i), prime(j)) (A204118).at n=15A204119
• Start with 2, then successively subtract the primes 3, 5, 7, ...at n=34A282329