2000100

Appears in sequences

• Sum of any three adjacent digits of n^2 is a square.at n=55A174397
• Concatenate the positions of digits 9, 8,..., 0 in the decimal representation of n, using 1 for the leftmost digit etc., and 0 when the digit does not occur.at n=26A260522
• Numbers whose k-th digit indicates the number of digits which occur k times.at n=6A380985
• Numbers of the form d_1 d_2 d_3 ... where the sum of their digits multiplied by their digit positions is equal to their number of digits.at n=23A381135