69030

Appears in sequences

• Amicable triples: numbers such that sigma(x) = sigma(y) = sigma(z) = x+y+z, x<y<z. We order these triples according to the common value of sigma. Sequence gives y numbers.at n=11A125491
• Integers whose binary digits "1" define, if sorted into a quadrant shape whose right angle lies in a Go board corner, same colored Go stones that surely live all, but not if any stone is omitted.at n=35A166537
• Greater of friendly pairs where both terms belong to A014574.at n=3A216058
• Indices of rows of triangle A262432 where the maximum term of the row is a new record.at n=38A262464