168480
domain: N
Appears in sequences
- a(n+2) = 9*a(n+1) - a(n), a(0) = 3, a(1) = 27.at n=5A065100
- Number of triangles in an n X n unit grid that have minimal possible area (of 1/2).at n=22A088658
- Sixth column of (1,5)-Pascal triangle A096940.at n=23A096943
- The sum of the two numbers in an amicable pair, A002025(n) + A002046(n).at n=12A180164
- Product of sums of elements of nonempty subsets of divisors of n.at n=8A229336
- Triangle read by rows: T(m,n) is the Szeged index of the grid graph P_m X P_n (1 <= n <= m).at n=52A245826
- The sum (in nondecreasing order) of the two numbers in an amicable pair.at n=12A259953
- Coefficients in expansion of 1/E_8.at n=2A287933
- Minimum crossing number at which there are n torus knots.at n=28A379242