42513

Appears in sequences

• Number of compositions of n such that two adjacent parts are not equal modulo 3.at n=23A062201
• Expansion of (1-x)/(1+x-x^2-2*x^3).at n=41A078041
• Number T(n,k) of Dyck paths of semilength n having exactly k (possibly overlapping) occurrences of the consecutive steps UDUUDU (with U=(1,1), D=(1,-1)); triangle T(n,k), n>=0, 0<=k<=max(0,floor(n/2)-1), read by rows.at n=27A243366
• Number of Dyck paths of semilength n avoiding the consecutive steps UDUUDU (with U=(1,1), D=(1,-1)).at n=11A243412
• Decimal encoding T(n,k) of the k-th non-averaging permutation of [n]; triangle T(n,k), n >= 0, k = 1..A003407(n), read by rows.at n=34A292523