66664

Appears in sequences

• Low temperature antiferromagnetic susceptibility for square lattice.at n=9A007215
• Numbers having four 6's in base 10.at n=28A043516
• Number of ways of getting (at least) 5 of a kind, a straight flush, flush, 4 of a kind, full house, straight, 3 of a kind, 2 pair, a pair in wild-card poker with deuces wild.at n=5A057802
• Numbers n such that every digit of both n and n^2 contains a loop (only digits 0,4,6,8,9 in n and n^2).at n=22A107626
• 5-almost primes with semiprime digits (digits 4, 6, 9 only).at n=24A111697
• Numbers k such that k and k^2 use only the digits 0, 4, 6, 8 and 9.at n=23A136956
• For k in {2,3,...,9} define a sequence as follows: a(0)=0; for n>=0, a(n+1)=a(n)+1, unless a(n) ends in k, in which case a(n+1) is obtained by replacing the last digit of a(n) with the digit(s) of k^2. This is k(8).at n=24A237345
• Number of bounded polygonal regions formed by drawing all least squares regression lines fitted to n points (j,y_j), 0 <= j < n, where each y_j is 0 or 1.at n=12A371439