234615096

Appears in sequences

• Bessel polynomial y_n(-1).at n=10A000806
• Number of loopless linear chord diagrams with n chords.at n=10A278990
• Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.at n=31A291843
• Triangle read by rows: T(n,k) = number of linear chord diagrams with n chords such that every chord has length at least k (1 <= k <= n).at n=46A293157
• Number of maximum matchings in the n-path complement graph.at n=19A302750
• Number of permutations of n copies of 1..10 introduced in order 1..10 with no element equal to another within a distance of 1.at n=1A322061