262925

Appears in sequences

• Numbers k such that k and k^2 use only the digits 1, 2, 5, 6 and 9.at n=40A137006
• Number of arrangements of n+1 numbers x(i) in -3..3 with the sum of x(i)*x(i+1) equal to zero.at n=6A188352
• T(n,k)=Number of arrangements of n+1 numbers x(i) in -k..k with the sum of x(i)*x(i+1) equal to zero.at n=42A188358
• Number of arrangements of 8 numbers x(i) in -n..n with the sum of x(i)*x(i+1) equal to zero.at n=2A188363
• Number of non-equivalent ways under symmetry in one axis that 2 non-attacking kings of different colors can be placed on an n X n board.at n=26A357740