113322

Appears in sequences

• Numbers k such that k concatenated with k-6 gives the product of two numbers which differ by 5.at n=16A116118
• Numbers k such that k concatenated with k-2 gives the product of two numbers which differ by 3.at n=11A116143
• Numbers k such that k concatenated with itself gives the product of two numbers which differ by 1.at n=6A116154
• Returning walks of length 2n on the upper half of the square lattice, distinct under reflections about the y-axis.at n=6A138552
• a(n) = 225*n^2 - 251*n + 70.at n=23A156810