Alexandrian integers: numbers of the form n = p*q*r such that 1/n = 1/p - 1/q - 1/r for some integers p,q,r.

A147811

Alexandrian integers: numbers of the form n = p*q*r such that 1/n = 1/p - 1/q - 1/r for some integers p,q,r.

Terms

    a(0) =6a(1) =42a(2) =120a(3) =156a(4) =420a(5) =630a(6) =930a(7) =1428a(8) =1806a(9) =2016a(10) =2184a(11) =3192a(12) =4950a(13) =5256a(14) =8190a(15) =8364a(16) =8970a(17) =10296a(18) =10998a(19) =12210a(20) =17556a(21) =19110a(22) =21114a(23) =23994a(24) =24492a(25) =28050a(26) =32640a(27) =33306a(28) =34362a(29) =37506

External references