Numbers m such that the product m*(m+1) has a set of prime divisors, from greatest down to 2, that is missing exactly two prime divisors.
A391970
Numbers m such that the product m*(m+1) has a set of prime divisors, from greatest down to 2, that is missing exactly two prime divisors.
Terms
- a(0) =7a(1) =10a(2) =11a(3) =32a(4) =39a(5) =84a(6) =119a(7) =143a(8) =153a(9) =168a(10) =209a(11) =220a(12) =242a(13) =272a(14) =285a(15) =324a(16) =351a(17) =374a(18) =441a(19) =455a(20) =494a(21) =624a(22) =675a(23) =728a(24) =1224a(25) =1539a(26) =1700a(27) =2057a(28) =2184a(29) =2499
External references
- oeis: A391970