Decomposition of Belgian-1 numbers
Belgian-1 numbers.
Decomposition of Belgian-2 numbers
Belgian-2 numbers.
Decomposition of A106564
Perfect squares which are not the difference of two primes.
Decomposition of Belgian-3 numbers
Belgian-3 numbers.
Decomposition of A106865
Primes of the form 2x^2 + 2xy + 3y^2.
Decomposition of A106867
Primes of the form 2*x^2+x*y+3*y^2.
Decomposition of A106881
Primes of the form x^2+xy+9y^2.
Decomposition of A107006
Primes of the form 4x^2-4xy+7y^2, with x and y nonnegative.
Decomposition of A107181
Primes of the form 8x^2 + 9y^2.
Decomposition of A107288
Primes whose digit sum is a square.









