525453

Appears in sequences

• Number of binary strings of length n with no substrings equal to 000 or 011.at n=42A164315
• Expansion of x*(1+x+x^2) / ( (x-1)*(x^3+x^2-1) ).at n=42A171861
• a(n) is the concatenation of 3n-2, 3n and 3n-1.at n=17A248555