66888

Appears in sequences

• None of the digits in k is present in k^2 or k^3.at n=22A029790
• Natural number transform of Aitken's triangle.at n=39A127740
• Number of 3-step one or two space at a time rook's tours on an n X n board summed over all starting positions.at n=35A187288
• Numbers n such that the smallest exponent k for n and n^k to have common digits is 4.at n=16A253602
• Numbers with digits 6 and 8 only.at n=37A284635
• Positive numbers whose square starts and ends with exactly 44, and no 444.at n=30A348831
• a(n) = 5 + 4^n + 3*((-i*sqrt(7) - 3)^n + (i*sqrt(7) - 3)^n)/2^n.at n=7A370846