217253

Properties

Appears in sequences

• Number of 5 X n binary arrays with a path of adjacent 1's and no path of adjacent 0's from top row to bottom row.at n=3A069419
• Number of n X 4 binary arrays with a path of adjacent 1's and no path of adjacent 0's from top row to bottom row.at n=4A069424
• Each entry is the first of three consecutive primes with equal digital sum.at n=9A209396
• a(n) = least prime > (5/3)*a(n - 1)*a(n - 3)/a(n - 2), with a(1) = 2, a(2) = 3, a(3) = 5.at n=42A377544
• Prime numbersat n=19384