54518

Appears in sequences

• Main diagonal of symmetric array defined by the recurrence T(n,1)=1, T(1,k)=1, for n >= k: T(n,k) = Sum_{i=1..k-1} T(n-i,k), for n < k: T(n,k) = Sum_{i=1..n-1} T(k-i,n).at n=10A212263
• Numbers k such that 89*10^k - 7 is prime.at n=24A283186
• Numbers that are the sum of eight fifth powers in three or more ways.at n=1A345611
• Numbers that are the sum of eight fifth powers in exactly three ways.at n=1A346328