423393

Appears in sequences

• a(n) = 5^n + n^5.at n=8A001593
• Leyland numbers: 3, together with numbers expressible as n^k + k^n nontrivially, i.e., n,k > 1 (to avoid n = (n-1)^1 + 1^(n-1)).at n=38A076980
• Triangle read by rows: T(n,r) = n^r + r^n (1 <= r <= n).at n=32A093898
• a(n) = n^(n+3) + (n+3)^n.at n=5A155539
• Numbers of the form x^y + y^x, 1 < x < y.at n=32A173054
• a(n) = 8^n + n^8.at n=5A198401
• Leyland numbers which are products of two distinct primes.at n=7A356423
• Numbers that can be written as s^x + t^y, with 1 < s < t and {s,t} = {x,y}; that is, are of the form s^s + t^t or s^t + t^s.at n=42A385232