Numbers n such that n and n+1 both have 20 divisors.

Terms

a(0) =5264a(1) =7695a(2) =13040a(3) =27135a(4) =33615a(5) =38960a(6) =41391a(7) =44144a(8) =54351a(9) =55808a(10) =62127a(11) =64719a(12) =70064a(13) =72495a(14) =77679a(15) =100624a(16) =101007a(17) =108783a(18) =108944a(19) =116720a(20) =124335a(21) =124496a(22) =132111a(23) =132272a(24) =139887a(25) =145232a(26) =160784a(27) =165807a(28) =176336a(29) =186704