113641

Appears in sequences

• Strong pseudoprimes to base 90.at n=28A020316
• Number of distributive lattices; also number of paths with n turns when light is reflected from 10 glass plates.at n=6A030114
• a(n) = (n+1)*(n+2)*(61*n^4 + 366*n^3 + 845*n^2 + 888*n + 360)/720.at n=9A108675
• Expansion of (1-3x+5x^2-x^3)/(1-3x+x^2)^2.at n=10A167477
• Fibonacci sequence with initial terms 10 and 21.at n=19A185691
• a(n) = Sum_{k=0..n} binomial(n,k)*(5*k)!/(k!)^5.at n=2A381164