1,1

a(n)=Min{x; x-A000010(x)=n!} = Min{A051953(x)=A000142(n)}

Solutions to x-Phi[x]=720 are {1008,1424,1432,1436,1438} of which the smallest is a(6)=1008.

Cf. A000010, A051953, A000142, A055487.

Sequence in context: A126941 A038077 A006396 this_sequence A002577 A076132 A047142

Adjacent sequences: A066275 A066276 A066277 this_sequence A066279 A066280 A066281

nonn

Labos E. (labos(AT)ana.sote.hu), Dec 10 2001