781250

Appears in sequences

• Numbers that are the sum of 2 nonzero 8th powers.at n=14A003380
• Numbers that are the sum of at most 2 nonzero 8th powers.at n=20A004875
• Positive integers n such that n | (2^n + n/2 + 1).at n=25A015945
• Numbers k such that k | 3^k + 1.at n=18A015949
• Numbers k such that k | 7^k + 1.at n=21A015954
• Expansion of (1-3*x)/(1-5*x).at n=9A020699
• Pisot sequences E(2,10), L(2,10), P(2,10), T(2,10).at n=8A020729
• Numbers of form 5^i*10^j, with i, j >= 0.at n=32A025625
• a(n) = 5*a(n-2), starting 1,2.at n=17A026383
• a(n) = 5*a(n-2), starting 1,2,4.at n=17A026395
• Sums of two powers of 5.at n=44A055237
• Numbers n such that n | 7^n + 6^n + 5^n.at n=37A057234
• Numbers k such that k | 10^k + 9^k + 8^k + 7^k + 6^k + 5^k + 4^k + 3^k.at n=33A057283
• Numbers k such that k | 12^k + 11^k + 10^k + 9^k + 8^k + 7^k + 6^k + 5^k.at n=29A057491
• Denominators of sequence arising from study of Calabi-Yau manifolds.at n=5A060347
• Numbers n such that n-th Pisano number = 6*n.at n=8A095687
• G.f. defined as the limit: A(x) = lim_{n->oo} F(n)^(1/5^(n-1)) where F(n) is the n-th iteration of: F(0) = 1, F(n) = F(n-1)^5 + (5x)^((5^n-1)/4) for n >= 1.at n=8A101194
• a(3*n) = 3*a(3*n-1)-3*a(3*n-2)+2*a(3*n-3), a(3*n+1) = 3*a(3*n)-3*a(3*n-1)+2*a(3*n-2), a(3*n+2) = 3*a(3*n+1)-3*a(3*n) with a(0)=1, a(1)=2, a(2)=3.at n=25A133335
• a(4*n)=5^n, a(4*n+1)=2*5^n, a(4*n+2)=3*5^n, a(4*n+3)=4*5^n.at n=33A140730
• a(n) = 5*a(n-2) for n > 2; a(1) = 2, a(2) = 5.at n=16A162963