422481

Appears in sequences

• Numbers k such that k^4 is a primitive sum of 3 positive fourth powers.at n=0A003828
• Smallest natural number whose 4th power is the sum of n 4th powers of distinct natural numbers, or 0 if no such number exists.at n=2A130022
• Numbers k such that k^4 = x^4 + y^4 + z^4, where x,y,z are positive integers.at n=0A175610
• a(n) = smallest positive k such that k^n is the sum of n-1 positive n-th powers, or 0 if no solution exists.at n=2A264764
• Number of n X 2 arrays containing 2 copies of 0..n-1 with no equal horizontal or vertical neighbors and new values introduced sequentially from 0.at n=7A265167
• T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with no equal horizontal or vertical neighbors and new values introduced sequentially from 0.at n=43A265170
• Triangle read by rows giving the number of configurations of n indistinguishable pairs placed on the vertices of the ladder graph P_2 X P_n such that exactly k such pairs are joined by an edge.at n=36A325753
• Square array read by antidiagonals downwards: T(n,k) is the smallest positive integer whose n-th power is the sum of k n-th powers of positive integers, or 0 if no such number exists.at n=18A347773