71808

Appears in sequences

• Negated coefficients of Chebyshev T polynomials: a(n) = -A053120(n+10, n), n >= 0.at n=7A006975
• Number of different rectangles when a piece of paper is folded n times in alternate directions.at n=9A096222
• Molecular topological indices of the cocktail party graphs.at n=16A181773
• Numbers with prime factorization pqrs^7.at n=17A190473
• Number of (n+2) X (4+2) 0..3 arrays with every 3 X 3 subblock row and column sum equal to 0 2 3 6 or 7 and every 3 X 3 diagonal and antidiagonal sum not equal to 0 2 3 6 or 7.at n=12A252110
• Aliquot sequence starting at 702.at n=11A269542
• Number of 2 X 2 matrices with entries in {0,1,...,n} with determinant = permanent with no entries repeated.at n=34A280058
• Numbers k such that k = Product (p_j^e_j) = Product (p_j*(e_j + 1)).at n=21A304410
• The number of permutations of length n and tier at most 1, that is, the number of permutations of length n sortable by two passes through a stack where outputting the longest prefix matching the identity permutation is prioritized.at n=9A308726
• Maximum number of copies of a 1234567 permutation pattern in an alternating (or zig-zag) permutation of length n + 11.at n=11A339358