12320100

Appears in sequences

• Number of reduced words of length n in Coxeter group on 27 generators S_i with relations (S_i)^2 = (S_i S_j)^4 = I.at n=5A163179
• Squares whose largest decimal digit is 3.at n=6A277947
• Squares using only decimal digits 0,1,2,3.at n=21A331543
• Obverse convolution A000045**A000045; see Comments.at n=7A374848
• Irregular triangular array T; row n shows the coefficients of the (n-1)-st polynomial in the obverse convolution s(x)**t(x), where s(x) = x+F(n) and t(x) = F(n), where F(n) = n-th Fibonacci number (A000045). See Comments.at n=35A375048
• Irregular triangular array T; row n shows the coefficients of the (n-1)-st polynomial in the obverse convolution s(x)**t(x), where s(x) = x+F(n) and t(x) = x+F(n), and F(n) = n-th Fibonacci number (A000045). See Comments.at n=35A375049