24367

Appears in sequences

• Even sequences with period 2n.at n=11A000206
• a(n) = Sum_{j=1..n} j*prime(j).at n=26A014285
• Numbers k > 1 such that, in base 6, k and k^2 contain the same digits in the same proportion.at n=12A061660
• Numbers k such that the squarefree part of k equals A062799(k).at n=33A069551
• Numbers k such that k + sum_of_digits(k) is a cube.at n=27A084661
• Majority value maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal, vertical and antidiagonal neighbors in a random 0..3 nX3 array.at n=4A220310
• Majority value maps: number of nX5 binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal, vertical and antidiagonal neighbors in a random 0..3 nX5 array.at n=2A220312
• T(n,k)=Majority value maps: number of nXk binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal, vertical and antidiagonal neighbors in a random 0..3 nXk array.at n=23A220313
• T(n,k)=Majority value maps: number of nXk binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal, vertical and antidiagonal neighbors in a random 0..3 nXk array.at n=25A220313
• Numbers x such that x = concatenate(a, b) and phi(a) + phi(b) = sigma(x) - x.at n=11A254624
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 809", based on the 5-celled von Neumann neighborhood.at n=28A273612
• Ulam numbers k such that 4*k and 16*k are also Ulam numbers.at n=34A287634
• Number of nX4 0..1 arrays with each 1 adjacent to 2, 3 or 4 king-move neighboring 1s.at n=4A296823
• Number of n X 5 0..1 arrays with each 1 adjacent to 2, 3 or 4 king-move neighboring 1's.at n=3A296824
• T(n,k)=Number of nXk 0..1 arrays with each 1 adjacent to 2, 3 or 4 king-move neighboring 1s.at n=31A296827
• T(n,k)=Number of nXk 0..1 arrays with each 1 adjacent to 2, 3 or 4 king-move neighboring 1s.at n=32A296827
• Numerator of the barycenter of first n primes defined as a(n) = numerator(Sum_{i=1..n} (i*prime(i)) / Sum_{i=1..n} prime(i)).at n=26A306834
• Numbers k such that sigma(k) = psi(k) + tau(k) + omega(k).at n=15A386637