112639

Appears in sequences

• Composite numbers k = concat(x,LSD(k)) such that k' = x', where k' is the arithmetic derivative of k.at n=2A293478
• Composite numbers k = concat(x,LSD(k)) such that the sum of the aliquot parts of k is equal to the sum of the aliquot parts of x.at n=3A293480
• a(n) is the smallest k such that A307092(k) = n.at n=29A307074
• List of connected graphs that are squares, encoded as in A076184.at n=30A382194