112151

Appears in sequences

• Expansion of (1+3*x+9*x^2+9*x^3+9*x^4+3*x^5+x^6) /( (1+x)^2 * (1-x)^5 ).at n=23A175898
• a(n) = (35*n^4 - 35*n^3 + 55*n^2 - 25*n + 6)/6.at n=11A181343
• Composite numbers whose product of digits is 10.at n=40A201057
• Number of n X 6 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 0 vertically.at n=8A207303
• G.f.: 1/(1 - q/G(0)) where G(k) = 1 - q^(k+1) / (1 - q^(k+1) / G(k+1) ).at n=13A227045