Numbers m such that m = s|t = phi(s)*sigma(t) for some numbers s and t, where "|" denotes concatenation.

A159000

Numbers m such that m = s|t = phi(s)*sigma(t) for some numbers s and t, where "|" denotes concatenation.

Terms

    a(0) =3360a(1) =19440a(2) =35712a(3) =55800a(4) =120960a(5) =395808a(6) =451584a(7) =548640a(8) =628992a(9) =695520a(10) =763344a(11) =3008768a(12) =3749760a(13) =5602320a(14) =17557344a(15) =46902240a(16) =55031040a(17) =119627904a(18) =162496048a(19) =193933440a(20) =243855360a(21) =249793920a(22) =374473800a(23) =377677440a(24) =548402400

External references