2441406250

Appears in sequences

• Expansion of (1-3*x)/(1-5*x).at n=14A020699
• Pisot sequences E(2,10), L(2,10), P(2,10), T(2,10).at n=13A020729
• a(n) = 5*a(n-2), starting 1,2.at n=27A026383
• a(n) = 5*a(n-2), starting 1,2,4.at n=27A026395
• Numbers n such that n-th Pisano number = 6*n.at n=13A095687
• Denominator of Euler(n, 1/5).at n=13A156183
• a(n) = 5*a(n-2) for n > 2; a(1) = 2, a(2) = 5.at n=26A162963
• a(n) = denominators of n!/10^n.at n=16A240534
• Numbers k such that uphi(k) does not divide uphi(k!).at n=25A291548