143451

Appears in sequences

• a(n) = binomial(n+4,4)*(4*n+5)/5.at n=19A034263
• Odd n such that 2*phi(n) < n, but there does not exist an even k < n with phi(k) = phi(n).at n=15A118700
• Number of n X 3 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j).at n=5A230179
• T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j).at n=33A230184
• Number of 6Xn 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j).at n=2A230189
• Number of nX3 0..2 white square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value 2-x(i,j).at n=12A230647
• Coefficients of the nonnegative powers of rho(11) = 2*cos(Pi/11) when written in the power basis of the degree 5 number field Q(rho(11)). Coefficients of the third power.at n=19A231185
• a(n) = n*(n+1)*(n+2)*(n+3)*(n^2+3*n+26)/720.at n=19A257200
• a(n) = n*(n + 1)*(n + 2)*(4*n - 3)/6.at n=21A264851
• Expansion of (1 - 2*x)/(1 - 9*x + 28*x^2 - 35*x^3 + 15*x^4 - x^5).at n=8A370391