64049

Appears in sequences

• a(n) = number of length-n sequences s with s[1]=1, s[2]=1, s[k-1] <=s[k] <= s[k-2]+s[k-1] (s is called a sub-Fibonacci sequence of length n).at n=8A005269
• a(n) = ((n+1)-st Lucas number) - (n-th non-Lucas number).at n=21A014243
• Lesser of 2 successive squarefree semiprimes (k, k+5) sandwiching 4 consecutive nonsquarefree numbers.at n=8A368589