19068

Appears in sequences

• Number of permutations of floor(i*8/7), i=0..n-1, with all sums of 3 adjacent terms unique.at n=7A152327
• Triangle read by rows: T(n,k) (n >= 0, 1 <= k <= n+1) are the signed Hultman numbers.at n=22A189507
• Column 2 of triangle in A189507.at n=5A189508
• Sum of numbers in the n-th antidiagonal of the reciprocity array of 2.at n=42A259580
• Triangle read by rows: T(n, k) = Sum_{j=0..n} C(-j-1, -n-1)*L(j, k), L the unsigned Lah numbers A271703, for n >= 0 and 0 <= k <= n.at n=51A271706
• Numbers k such that (8*10^k + 67)/3 is prime.at n=20A281732
• Number of n X n 0..1 arrays with every element unequal to 2, 3 or 4 king-move adjacent elements, with upper left element zero.at n=5A303683
• Number of nX6 0..1 arrays with every element unequal to 2, 3 or 4 king-move adjacent elements, with upper left element zero.at n=5A303688
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 2, 3 or 4 king-move adjacent elements, with upper left element zero.at n=60A303690
• Number of non-derogatory n X n matrices with elements {0, 1, 2}.at n=2A306818
• Convolve Fibonacci, Pell and bronze Fibonacci numbers.at n=10A309717
• Composite numbers with properties that its digits (which may appear with multiplicity) may not appear in any of its factors (wherein the digits may also appear with multiplicity) and the combined digits of the product and the factors must have at least one of each of the ten digits.at n=32A370972
• Number of subsets of {1..n} where no two elements sum to a prime.at n=26A391562