126673

Appears in sequences

• Strong pseudoprimes to base 49.at n=36A020275
• Composite numbers n with the property that phi(n) divides (n-1)^2.at n=21A173703
• Number of n X 5 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 2 and every value within 2 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.at n=9A253220
• Composites in base 10 that remain composite in exactly four bases b, 2 <= b <= 10, expansions interpreted as decimal numbers.at n=31A256354