162886

Appears in sequences

• a(n) = the smallest k such that k^2+1 = p*A002144(n)^2, p prime of A002144 .at n=17A174492
• a(n) = a(n-2) + a(n-3) for n >= 3, with a(0) = a(1) = 2, a(2) = 1.at n=42A276477
• a(n) = 2*n^3 - 4*n^2 + 6*n - 2 (n>=1).at n=43A304159