520000

Appears in sequences

• a(n)^3 is smallest cube containing exactly n 0's.at n=14A048365
• a(n) = 10*a(n-1) - 20*a(n-2), a(0)=1,a(1)=5.at n=7A090139
• Terms in A003325 which are sum of two subsequent terms in A003325.at n=19A145732
• Numbers k whose reversal divides the reversal of k+1.at n=30A250602
• Irregular triangle T(n,k), n >= 0, 0 <= k < 2^(n-1), where T(n,k) = Product_{j=0..n-1} prime(j+1)^((n-j)*d_j), where d_j is the bit with digit weight 2^j in the binary expansion of 2^(n-1)+k.at n=37A384003
• Irregular triangle T(n,k), n >= 0, 0 <= k < 2^(n-1), where T(n,k) = Product_{j=0..n-1} prime(n-j)^((j+1)*d_j), where d_j is the bit with digit weight 2^j in the binary expansion of 2^(n-1)+k.at n=41A387465