Numbers m such that the product m*(m+1) has a set of prime divisors, from greatest down to 2, that is missing exactly one prime divisor.
A391885
Numbers m such that the product m*(m+1) has a set of prime divisors, from greatest down to 2, that is missing exactly one prime divisor.
Terms
- a(0) =4a(1) =6a(2) =21a(3) =27a(4) =44a(5) =48a(6) =49a(7) =54a(8) =55a(9) =63a(10) =65a(11) =77a(12) =90a(13) =98a(14) =99a(15) =104a(16) =120a(17) =175a(18) =195a(19) =350a(20) =363a(21) =560a(22) =594a(23) =935a(24) =1000a(25) =1155a(26) =1274a(27) =2430a(28) =2925a(29) =4095
External references
- oeis: A391885