66686

Appears in sequences

• Near-repdigit semiprimes with 6 as repeated digit.at n=26A105987
• Number of parts that are multiples of 3 in all partitions of n.at n=39A116635
• Numbers with digits 6 and 8 only.at n=32A284635
• a(n) is the end square spiral number for a knight starting on square n moving on a board with squares numbered with the square of their distance from the 0-square origin and where the knight moves to the smallest numbered unvisited square; the smallest spiral number ordering is used if the distances are equal.at n=14A326931