47375

Appears in sequences

• Expansion of (3-2*x-3*x^2-4*x^3)/(1-3*x+x^2+x^3+x^4).at n=12A024876
• Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in two by two blocks.at n=13A145861
• Expansion of x*(1 + 2*x - 3*x^2 + 4*x^3) / (1 - x - x^2 + x^3 - x^4).at n=26A322753
• Numbers k such that k and k+1 are both terms in A377209.at n=22A377271
• Numbers k such that k and k+1 are both terms in A377210.at n=6A377272