391266

Appears in sequences

• Number of (odd and even) split numbers (A036382) below 2^n.at n=18A036389
• The number of planar partitions of n with adjacent parts differing by no more than 1.at n=30A252479
• Number of iterations before a repeated value, or -1 if this never occurs, when starting at k = 1 and repeating k = k*n if k does not contain any adjacent equal digits, else k = k with all adjacent equal digits replaced by a single copy of the same digit.at n=40A368940