732421875

Appears in sequences

• Expansion of g.f. (1 - 2*x)/(1 - 5*x).at n=13A005053
• a(n) = 5^(n/2) for n even, a(n) = 3*5^((n-1)/2) for n odd.at n=25A056487
• Reciprocal of n terminates with an infinite repetition of digit 3. Multiples of 10 are omitted.at n=19A064562
• a(n) = (4*5^n + (-5)^n)/5.at n=13A083222
• Numbers k such that k divides the concatenation of all divisors of k in ascending order other than 1 and k itself.at n=15A088376
• Expansion of (1 + 3x - 2x^2 - 12x^3)/(1 - 9x^2 + 20x^4).at n=25A097111
• a(1) = 1, a(2) = 3; for n >= 3, take a(n) to be the smallest odd number not occurring earlier such that a(n-1) divides the concatenation a(n-2)a(n).at n=25A111386
• a(n) = 5*a(n-2) for n > 2; a(1) = 3, a(2) = 5.at n=24A163114
• Expansion of 1/(1-x*sqrt(4*x^2+1)-2*x^2).at n=26A249512
• a(n) is the smallest number having exactly n ways to be represented as sum of at least two consecutive positive integers and expressible as sum of n consecutive positive integers, or 0 if no such number exists.at n=23A316744