2125760

Appears in sequences

• Positive integers with the property that if the base-3 representation is reversed the result is twice the original number.at n=31A173951
• a(1)=32 and, for n > 1, a(n) = 9*a(n-1) + 32.at n=5A173952
• a(n) = 4*(3^n-1).at n=12A302507