21219
domain: N
Appears in sequences
- Numbers that are the sum of 9 nonzero 8th powers.at n=33A003387
- Numbers that are the sum of 4 positive 9th powers.at n=8A003393
- Numbers that are the sum of at most 4 positive 9th powers.at n=24A004888
- Numbers that are the sum of at most 5 positive 9th powers.at n=33A004889
- Numbers that are the sum of at most 6 positive 9th powers.at n=43A004890
- Round(1000*x), where x is the solution to x = 3^(n-x).at n=24A103537
- Position of cubes in the EKG sequence (A064413).at n=27A140418
- Numbers of the form x^2 + y^2 + z^2 = phi(x*y*z) + sigma(x*y*z).at n=28A173792
- Unchanging value maps: number of nX5 binary arrays indicating the locations of corresponding elements unequal to no king-move neighbor in a random 0..2 nX5 array.at n=5A219448
- Unchanging value maps: number of nX6 binary arrays indicating the locations of corresponding elements unequal to no king-move neighbor in a random 0..2 nX6 array.at n=4A219449
- T(n,k)=Unchanging value maps: number of nXk binary arrays indicating the locations of corresponding elements unequal to no king-move neighbor in a random 0..2 nXk array.at n=49A219451
- T(n,k)=Unchanging value maps: number of nXk binary arrays indicating the locations of corresponding elements unequal to no king-move neighbor in a random 0..2 nXk array.at n=50A219451
- Number of (n+1) X (1+1) 0..2 arrays with the minimum plus the upper median equal to the lower median plus the maximum in every 2 X 2 subblock.at n=7A235877
- T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the minimum plus the upper median equal to the lower median plus the maximum in every 2X2 subblock.at n=28A235884
- T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the minimum plus the upper median equal to the lower median plus the maximum in every 2X2 subblock.at n=35A235884
- 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=19A247317
- Numbers that are the sum of four fourth powers in exactly two ways.at n=44A344193