25753

Appears in sequences

• Number of rooted trees with n nodes and 3 leaves.at n=31A055278
• Numbers n such that n and prime(n) end with the same three digits.at n=20A067841
• Coefficients of the sum 1+ x/(1-x) + x^2/(1-x^2) + x^3/ ( (1-x)(1-x^2)) + x^4/ ( (1-x)(1-x^3) ) + x^5/ ( (1-x)(1-x^4) ) + x^5 /((1-x^2)(1-x^3)) + x^6/ ( (1-x)(1-x^2)(1-x^3)) + ...at n=48A178702
• Number of n X 3 0..1 arrays with rows, antidiagonals and columns unimodal.at n=7A223632
• T(n,k)=Number of nXk 0..1 arrays with rows, antidiagonals and columns unimodal.at n=47A223637
• Triangle in which row n lists the coefficients in Product_{k=1..n} (1 + k*x + x^2), for n>=0, as read by rows.at n=68A249790