78728

Appears in sequences

• Row 4 of table A162430.at n=39A162433
• Positive integers with the property that if the base-3 representation is reversed the result is twice the original number.at n=13A173951
• Numbers k for which 6k+1, 24k+5, 432k^2+72k-1, and 432k^2+90k-1 are all prime.at n=57A175513
• Number of 3-step knight's tours on an (n+2) X (n+2) board summed over all starting positions.at n=37A186852
• T(n,k) = (n-1)*A220555(n,k), n,k = 2,3,....at n=37A187772
• Number of partitions of n such that (greatest part) - (least part) < number of parts.at n=47A237830
• a(n) = 4*(3^n-1).at n=9A302507