28966

Appears in sequences

• Number of essentially parallel series-parallel networks with n unlabeled edges, multiple edges not allowed.at n=15A058385
• Essentially series series-parallel networks with n unlabeled edges, multiple edges not allowed.at n=15A058386
• Number of permutations of length n which avoid the patterns 1423, 3124, 3421.at n=10A116749
• Number of palindromic compositions of n into nonprime numbers.at n=53A276421
• Number of permutations of [n] avoiding {2341, 2143, 4123}.at n=11A294719
• Second Moebius transform of A000219. Number of plane partitions of n whose multiset of rows is aperiodic and whose multiset of columns is also aperiodic.at n=18A323584
• Number of strict solid partitions of n.at n=29A323657
• E.g.f. satisfies A(x) = (exp(x/(1 - A(x))) - 1)/(1 - A(x)).at n=5A371329