26027

Appears in sequences

• a(n) = a(n-1) + a(m) for n >= 4, where m = 2*n - 2 - 2^(p+1) and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = 1, a(2) = 2, and a(3) = 1.at n=35A050043
• A mean binomial transform of the Catalan numbers.at n=9A102318
• Positive integers n that are equal to the determinant of the circulant matrix formed by the decimal digits of n.at n=19A219324
• Positive integers m that are equal to the determinant of the circulant matrix formed by the decimal digits of m in reverse order.at n=19A219326
• Positive integers k that are equal to the absolute value of the determinant of the circulant matrix formed by the decimal digits of k.at n=21A219327
• Number of (n+2)X(2+2) 0..4 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.at n=1A251957
• T(n,k)=Number of (n+2)X(k+2) 0..4 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.at n=4A251962
• Positive integers m that are equal to the determinant of the left circulant matrix formed by the decimal digits of m.at n=10A348428
• Non-Brauer numbers.at n=11A349044