46481

Appears in sequences

• Number of permutations of length n which avoid the patterns 231, 1432, 4123.at n=16A116734
• Rectangular table, read by antidiagonals, where the g.f. of row n is Sum_{i>=0} F_i(x)^n / 2^(i+1), where F_0(x)=x, F_{n+1}(x) = F_n(x+x^2), for n>=1.at n=50A122941
• a(n) = n*a(n-3) + a(n-4) for n >= 4.at n=17A130636
• a(n) is the total number of squares after n iterations of the "Square Multiscale" substitution.at n=18A329919