21827

Appears in sequences

• Number of 3 X 3 matrices with nonnegative integer entries and all row sums equal to n, up to row and column permutation.at n=12A058389
• Composite squarefree numbers n such that p(i)+2 divides n-2, where p(i) are the prime factors of n.at n=1A225712
• Minimum composite squarefree numbers k such that p(i)+n divides k-n, for n=1, 2, 3, 4,..., where p(i) are the prime factors of k .at n=26A227974
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 62", based on the 5-celled von Neumann neighborhood.at n=16A278667
• Numbers k such that k and k-1 both first appear in the same power of 2 (in base 10).at n=50A322919
• Numbers that are the sum of eight fourth powers in nine or more ways.at n=31A345584
• Numbers that are the sum of eight fourth powers in exactly nine ways.at n=16A345841
• Numerators of an infinite series that converges to the negative inverse of Backhouse's constant (A088751).at n=19A368862
• Irregular triangle giving on row n all antiderivatives of A024451(n), for n >= 2.at n=8A377992
• Least composite squarefree numbers k > n such that p + n divides k - n, for each prime p dividing k.at n=26A382484
• Indices of records in A210693.at n=21A391871