44518

Appears in sequences

• Expansion of (1 + x + x^2)/(1 - x^2 - 2*x^3).at n=26A159288
• Expansion of (1-x)/((1-2*x)*(1-5*x+6*x^2-x^3)).at n=8A234267
• Numerator of (1+sigma(s)) / ((s+1)/2), where s is the square of n prime-shifted once (s = A003961(n)^2 = A003961(n^2)).at n=44A337338
• T(n,k) is the number of connected unlabeled posets with n elements and rank k: triangle read by rows.at n=38A342500