Let P = 2*3*5*..*p_n = n-th primorial number (A002110), G = Z_2xZ_3x...xZ_{p_n}; a(n) = max{e in G} min{i : both e+i, e-i are relatively prime to P}.
A013581
Let P = 2*3*5*..*p_n = n-th primorial number (A002110), G = Z_2xZ_3x...xZ_{p_n}; a(n) = max{e in G} min{i : both e+i, e-i are relatively prime to P}.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =15a(4) =33a(5) =75a(6) =90a(7) =105a(8) =165a(9) =213
External references
- oeis: A013581