152448

Appears in sequences

• a(1) = a(2) = a(3) = 1 and a(n) = 24*binomial(n+1, 5) + n*(n^2 - n + 6) for n > 3.at n=15A062027
• Triangle read by rows: T(n,k) is the number of alternating (i.e., down-up) permutations of {1,2,...,n} having k fixed points (n >= 0, 0 <= k <= ceiling(n/2)).at n=51A162979
• Triangle read by rows: Eulerian triangle that produces sums of even powers.at n=23A296229
• Triangle read by rows: Eulerian triangle that produces sums of even powers.at n=25A296229