20878

Appears in sequences

• T(2n+5,n), array T as in A055794.at n=10A055798
• Number of level steps in all 2-Motzkin paths (i.e., Motzkin paths with blue and red level steps) of length n, without red level steps on the x-axis.at n=9A126223
• Number of permutations of [n] avoiding the pattern 12-3-4.at n=7A200406
• -2-Knödel numbers.at n=29A225506
• Number of Motzkin excursions of length n with an odd number of peaks.at n=13A307578
• Number of set partitions of [n] such that each block has at most one odd element.at n=11A363430