240528

Appears in sequences

• Number of nX2 1..4 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in increasing order.at n=15A166815
• Numbers n such that pi(2n) divides n.at n=35A235495
• a(n) is the number of n-digit primes that have at least one zero among their digits (A056709).at n=6A373294