46647

Appears in sequences

• Numbers expressible in more than one way as 6^x-y^2.at n=21A134989
• a(n) = 81*n^2 - 9.at n=23A157909
• Numbers k such that the decimal digits of k*(k+1) are a permutation of those of k*(k-1).at n=17A181775
• Monotonic ordering of nonnegative differences 6^i-3^j, for 40>= i>=0, j>=0.at n=34A192152
• Sum of all squarefree semiprimes with greater prime factor prime(n).at n=20A339194
• Indices of records in A307730.at n=49A348449