42986

Appears in sequences

• Number of binary strings of length n with no substrings equal to 0001 0100 or 0110.at n=17A164463
• a(n) = 2*a(n-1) - a(n-2) + a(n-4), n>3, a(0)=0, a(1)=a(2)=1, a(3)=3.at n=23A286311
• Number of pairs of two disjoint sets of n positive integers more than 1 with product A354697.at n=13A372849
• Upper (1/2)-midsequence of F(n) and F(n+4), where F = A000045 (Fibonacci numbers); see Comments.at n=21A390351