A048892 Start of n consecutive integers with distinct number of divisors.
1, 1, 4, 9, 45, 76, 270, 2204, 3718, 95499, 590890, 16023339, 16475964, 1745175039, 31287652672, 347321438520, 2620400333120, 239919791836864
Offset: 1
Examples
The 5th number of this sequence, 45, means that 45, 46, 47, 48 and 49 all have distinct number of divisors: 6, 4, 2, 10 and 3, respectively.
Links
- Carlos Rivera, Problem 20. Divisors (II) K consecutive numbers with the same number of divisors, The Prime Puzzles and Problems Connection. See Problem 20c.
Extensions
More terms from Jud McCranie
a(15)-a(16) from Donovan Johnson, Feb 17 2010
a(17)-a(18) from Martin Ehrenstein, Aug 07 2023