162180

Appears in sequences

• Coordination sequence for 4-dimensional primitive di-isohexagonal orthogonal lattice.at n=30A008530
• Frobenius number of the numerical semigroup generated by three consecutive pentagonal numbers.at n=34A069757
• Numerators b(n) of Pythagorean approximations b(n)/a(n) to sqrt(2/3).at n=5A195632
• a(n) = 4*a(n-1) - a(n-2) with a(0) = 0, a(1) = 4.at n=9A231896