111239

Appears in sequences

• a(n) = (n-1)*(n-2)^4 - A028294(n), for n > 4, with a(1) = a(2) = 0, a(3) = 2, and a(4) = 48.at n=15A075690
• Number of (n+7)X10 0..1 matrices with each 8X8 subblock idempotent.at n=7A224592
• Numbers n such that both n and n^2 contain "123" as a substring.at n=15A268278