A078860 Least positive residues [mod 210] representing those residue classes which can be lesser of prime pairs from A029710.

7, 13, 19, 37, 43, 67, 79, 97, 103, 109, 127, 139, 163, 169, 187, 193

Offset: 1

Author

Labos Elemer, Dec 13 2002

Keywords

• fini
• full
• nonn

Crossrefs

Cf. A029710, A008364, A078859.

Programs

Mathematica

t=Flatten[Position[Table[GCD[w, 210], {w, 1, 210}], 1]] t2=Intersection[t, t+4]-4

Formula

Intersection[RRS(210), 4+RRS{210)]-4 and {7}. RRS[210]=reduced residue system of 210=first 48=phi[210] terms of A008364; additional term 7 is a singular cases; 210k+r generates complete A029710 with suitable k and r taken from these 15+1 numbers.