51023735

Appears in sequences

• a(n) = A098601(2n) + A098601(2n+1).at n=31A137495
• a(n) = 3*a(n-1) - 2*a(n-2) + a(n-3), n > 3.at n=21A137584
• Number of binary strings of length n with no substrings equal to 0010 0101 or 1010.at n=27A164494