4132485216

Appears in sequences

• a(1) = 9; a(n+1) = a(n) * sum of decimal digits of a(n).at n=7A047901
• a(1) = 3; for n > 0, a(n+1) = a(n) * sum of digits of a(n).at n=8A047912
• Number of transpositions (interchanges of adjacent digits, sometimes called inversions) needed to change all n-digit base 3 numbers into nondecreasing order.at n=16A069515
• Number of (n+1)X4 0..2 arrays with no 2X2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..2 introduced in row major order.at n=8A203979