66668

Appears in sequences

• Numbers k such that k^2 contains only digits {2,4,6}.at n=8A053922
• Number of Fibonacci numbers F(k), k <= 10^n, which end in 8.at n=5A073555
• T(n,m) is the smallest number that starts a sequence of n+1 consecutive integers whose Euler totient Functions are multiples of m.at n=61A128252
• Numbers k such that k and k^2 use only the digits 0, 2, 4, 6 and 8.at n=38A136904
• Numbers k such that k and k^2 use only the digits 1, 2, 4, 6 and 8.at n=30A136994
• Numbers k such that k and k^2 use only the digits 2, 3, 4, 6 and 8.at n=18A137072
• Numbers k such that k and k^2 use only the digits 2, 4, 5, 6 and 8.at n=26A137095
• Numbers k such that k and k^2 use only the digits 2, 4, 6, 7 and 8.at n=27A137101
• Numbers k such that k and k^2 use only the digits 2, 4, 6 and 8.at n=7A137103
• Numbers k such that k and k^2 use only the digits 2, 4, 6, 8 and 9.at n=19A137104
• Euler transform of A051064, the ruler function sequence for k=3.at n=35A173241
• 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=28A237345
• Numbers with digits 6 and 8 only.at n=31A284635
• a(n) = 2*a(n-1) - a(n-2) + a([n/2]), where a(0) = 1, a(1) = 1, a(2) = 1.at n=40A298414
• Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.at n=5A299362
• Number of nX6 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.at n=3A299364
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.at n=39A299366
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.at n=41A299366
• Number of nX5 0..1 arrays with every element unequal to 0, 1 or 3 king-move adjacent elements, with upper left element zero.at n=22A303679