47877

Appears in sequences

• Smallest number that takes n steps to reach 0 under "k->max product of 2 numbers whose concatenation is k".at n=23A035932
• Numbers k such that 187*2^k-1 is prime.at n=12A050845
• Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,5,0,0,3,1,0 for x=0,1,2,3,4,5,6.at n=5A197919
• Numbers k such that A383844(k) and A383844(k+1) are nonzero.at n=53A384310