395060

Appears in sequences

• a(n)=Sum((-1)^(i+Floor(n/2))S(2i+e),(i=0,..,Floor(n/2))), where S(n) are generalized Tetranacci numbers (A073817) and e=(1/2)(1-(-1)^n).at n=20A075112
• Number of binary strings of length n with no substrings equal to 0001, 1010, or 1100.at n=31A164487