28227

Appears in sequences

• Number of primitive (period n) bracelet structures using a maximum of six different colored beads.at n=11A056365
• Engel expansion of 3^(1/3) = 1.44225.at n=16A059179
• 3p^2 where p runs through the primes.at n=24A079705
• Number of configurations of the 5 X 2 variant of Sam Loyd's sliding block 15-puzzle that require a minimum of n moves to be reached, starting with the empty square in one of the corners.at n=25A090036
• Number of fib00 primes (A095082) in range [2^n,2^(n+1)].at n=19A095062
• Number of (n+2) X 7 binary arrays with every 3 X 3 subblock commuting with each horizontal and vertical neighbor 3 X 3 subblock.at n=17A190029
• Numbers of the form 20*k+7 which are three times a square.at n=19A192328
• 3*h^2, where h is an odd integer not divisible by 3.at n=32A229852
• Concatenate n-th composite number with concatenation of its prime factors in ascending order.at n=17A245315
• Numbers x such that the sum of all their cyclic permutations is equal to that of all cyclic permutations of sigma(x) and all cyclic permutations of Euler totient function phi(x).at n=36A247317
• Numbers that are the sum of three squares in arithmetic progression.at n=40A292313
• Number of nX6 0..1 arrays with every element equal to 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=8A299610
• Numbers that can be represented in more than one way as p^2+p*q+q^2 with p and q primes, p<=q.at n=24A349987
• Numbers of the form p^2*q, with odd primes p > q, such that q divides p-1.at n=18A350638