11920740

Appears in sequences

• Number of aperiodic necklaces of n beads of 2 colors, 11 of them black.at n=23A032169
• Number of necklaces with 11 black beads and n-11 white beads.at n=24A032196
• Expansion of 1/(1 - 11*x + 45*x^2 - 84*x^3 + 70*x^4 - 21*x^5 + x^6).at n=10A122589
• a(n) = Sum_{k=0..n} A033184(n,k)*A033184(n,n-k), where Catalan triangle entry A033184(n,k) = C(2*n-k,n-k)*(k+1)/(n+1).at n=10A143388
• Number of preference profiles with 4 alternatives and n agents (IANC model).at n=11A296260
• a(n) = binomial(A007310(n+1),n)/A007310(n+1).at n=11A367520
• Number of achiral polyominoes composed of n tetrahedral cells of the hyperbolic regular tiling with Schläfli symbol {3,3,oo}.at n=22A371351