1000000020

Appears in sequences

• Concatenate the positions of digits 9, 8,..., 0 in the decimal representation of n, using 1 for the rightmost digit etc., and 0 when the digit does not occur.at n=19A260521
• Numbers m whose leading digit and the other decimal digits appear respectively before and directly after the decimal point of its m-th root.at n=9A334168