445145

Appears in sequences

• a(n) is the start m of first run of n consecutive numbers with periodic sequence of values of number of divisors [tau(m), tau(m+1), tau(m), tau(m+1), tau(m), ...] where tau(m) != tau(m+1).at n=7A337158
• Inverse Euler transform of the Riordan numbers, (A005043).at n=17A358451