150046

Appears in sequences

• a(n) = a(n-1) + a(n-2) + 4, with a(0)=0, a(1)=2.at n=22A168193
• Row sums of triangle in A204026.at n=43A238374
• Number of distinct linear polynomials b+c*x in row n of array generated as in Comments.at n=22A242448
• Number T(n,k) of linear chord diagrams having n chords and maximal chord length k (or k=0 if n=0); triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=42A293961
• Numbers whose Zeckendorf representation (A014417) and dual Zeckendorf representation (A104326) are both palindromic.at n=23A331192