177699

Appears in sequences

• Number of -3..3 arrays x(i) of n+1 elements i=1..n+1 with x(i)+x(j), x(i+1)+x(j+1), -(x(i)+x(j+1)), and -(x(i+1)+x(j)) having one, three or four distinct values for every i<=n and j<=n.at n=5A211503
• Numbers that are the sum of four fourth powers in three or more ways.at n=15A344241
• Numbers that are the sum of four fourth powers in exactly three ways.at n=15A344242