91500

Appears in sequences

• Number of skew Dyck paths of semilength n having no ascents of length 1.at n=11A128750
• Number of compositions of n such that the largest part is coprime to every other part.at n=19A130709
• Total number of parts in all partitions of n plus the sum of largest parts in all partitions of n plus the number of partitions of n plus n.at n=29A225610
• a(n) = 3*(9*n - 1)*(3*n - 2).at n=34A277985
• Number of edges formed by drawing the lines connecting any two of the 2*(n+2) perimeter points of a 3 X (n+1) rectangular grid of points (or equally, a 2 X n grid of squares).at n=20A331765