638450

Appears in sequences

• Number of binary vectors of length n+1 beginning with 0 and containing just 1 singleton.at n=26A006367
• Number of (n+2) X 7 binary arrays avoiding patterns 001 and 110 in rows, columns and nw-to-se diagonals.at n=19A202444
• Numbers that are multiple-digit narcissistic numbers in exactly four bases.at n=21A256363