2-highly composite numbers: 3-smooth numbers (A003586) k with d(k) > d(j) for all 3-smooth numbers j < k, where d(k) is the number of divisors of k (A000005).
A309015
2-highly composite numbers: 3-smooth numbers (A003586) k with d(k) > d(j) for all 3-smooth numbers j < k, where d(k) is the number of divisors of k (A000005).
Terms
- a(0) =1a(1) =2a(2) =4a(3) =6a(4) =12a(5) =24a(6) =36a(7) =48a(8) =72a(9) =144a(10) =216a(11) =288a(12) =432a(13) =576a(14) =864a(15) =1296a(16) =1728a(17) =2592a(18) =3456a(19) =5184a(20) =6912a(21) =10368a(22) =15552a(23) =20736a(24) =31104a(25) =41472a(26) =62208a(27) =82944a(28) =93312a(29) =124416
External references
- oeis: A309015