119156

Appears in sequences

• Number of nondecreasing Dyck paths of semilength n and having no peaks at odd level (n>=0). A nondecreasing Dyck path is a Dyck path for which the sequence of the altitudes of the valleys is nondecreasing.at n=19A121482
• Number of 2 X 2 matrices having all terms in {-n,...,0,..,n} and determinant >= 3n.at n=11A211153
• Expansion of g^2/(1 + x^4*g^4), where g = 1+x*g^3 is the g.f. of A001764.at n=8A391303