27724

Appears in sequences

• Base-9 palindromes that start with 4.at n=38A043031
• Partial sums of A072857.at n=14A173052
• Number of permutations of {1..n} with fewer than 3 interior elements having values lying between the values of their neighbors.at n=8A226436
• T(n,k) = number of permutations of {1..n} with fewer than k interior elements having values lying between the values of their neighbors.at n=52A226441
• Number of nX7 0..1 arrays with every element equal to 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.at n=12A298145
• a(n) is the number of integer partitions of n for which the rank is equal to the index of the seaweed algebra formed by the integer partition paired with its weight.at n=59A318205
• Indices of 0 in A348295: numbers m such that Sum_{k=1..m} (-1)^(floor(k*(sqrt(2)-1))) = Sum_{k=1..m} (-1)^A097508(k) = 0.at n=33A348299
• Number of paths from (0, 0) to (2n, 2n) in an n X n grid using only steps north, northeast and east (i.e., steps (1, 0), (1, 1), and (0, 1)) and that do not pass through diagonal points with odd coordinates.at n=4A370498