131430

Appears in sequences

• Positive numbers k such that k and 2*k are anagrams in base 5 (written in base 5).at n=25A023061
• Number of compositions of n into distinct parts with exactly six descents.at n=22A241725
• Number of (3+1) X (n+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=13A250771
• Composite numbers k such that k = q_1^b_1 * ... * q_r^b_r with r >= 2, where q_1 < q_2 < ... < q_r are the prime factors of k and there exists some positive integer m that satisfies k = q_1^m + q_2 + q_3 + ... + q_r.at n=6A330939