100307

Appears in sequences

• Smallest k whose 'Reverse and Subtract' trajectory has a preperiodic part of length n.at n=26A072138
• Least number that requires n steps to reach 0 by repeated application of f: x -> abs(x - reverse(x)).at n=26A109891
• Number of (n+2)X(2+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 or 4.at n=6A251676
• Number of (n+2)X(7+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 or 4.at n=1A251681
• T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 or 4.at n=29A251682
• T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 or 4.at n=34A251682
• Numbers with 3k digits for some k such that the first k digits minus the middle k digits equals the last k digits.at n=57A290725