71270

Appears in sequences

• Denominators of convergents of the continued fraction with the n+1 partial quotients: [2;2,2,...(n 2's)...,2,n+1], starting with [1], [2;2], [2;2,3], [2;2,2,4], ...at n=11A088211
• Generalized Catalan numbers for triangle A119335.at n=12A119365
• Number of rooted planar n-trees whose number of leaves is equal to 1 modulo 3.at n=12A119366