81763

Appears in sequences

• Expansion of (1-x)/(1-x^2+2*x^3).at n=28A078028
• a(1) = 7 then the smallest number such that the forward as well as the reverse n-th partial concatenation is a prime for n>1. (Reverse concatenation is taken term-wise and not digit-wise).at n=37A083994
• G.f. x*(x^2+1)*(x^3-x-1)/((2*x^3+x^2-1)*(x^4+1)).at n=29A107854
• Expansion of x*(1+x)/(1-x^2-2*x^3).at n=29A159284
• The maximum number of coins that can be processed in n weighings where all coins are real except for one LHR-coin starting in the light state.at n=13A279673