200220

Appears in sequences

• Smallest multiple of the n-th prime beginning and ending in n with a(1)=a(3)=0.at n=19A078212
• Numbers k such that k and k^2 use only the digits 0, 2, 3, 4 and 8.at n=45A136885
• Numbers k such that k and k^2 use only the digits 0, 2, 4, 6 and 8.at n=50A136904
• Numbers k such that k and k^2 use only the digits 0, 2, 4 and 8.at n=28A136908
• Numbers k such that k and k^2 use only the digits 0, 2, 4, 8 and 9.at n=52A136909
• Numbers whose decimal expansion contains only 0's and 2's.at n=38A169965
• Numbers k such that k^2 has only digits 0, 4 and 8.at n=32A202170
• Lexicographically earliest sequence of distinct terms > 1 such that no term is a substring of the product of any two terms.at n=41A381242