78012

Appears in sequences

• 2n^4+6n^2+4 = 2(n^2+1)(n^2+2).at n=13A120571
• Long leg B of primitive Pythagorean triangles such that perimeters are Averages of twin prime pairs, q=p+1, a=q^2-p^2, c=q^2+p^2, b=2*p*q, s=a+b+c, s-+1 are primes.at n=18A155174
• Number of squarefree permutations of {1, ..., n} up to symmetry.at n=11A238937
• Second component B of the pairs (A, B) from A389379.at n=33A389390