## Tribonacci non-divisors

### Problem 225

Published on Friday, 26th December 2008, 05:00 pm; Solved by 2434

The sequence 1, 1, 1, 3, 5, 9, 17, 31, 57, 105, 193, 355, 653, 1201 ...
is defined by T1 = T2 = T3 = 1 and Tn = Tn-1 + Tn-2 + Tn-3.

It can be shown that 27 does not divide any terms of this sequence.
In fact, 27 is the first odd number with this property.

Find the 124th odd number that does not divide any terms of the above sequence.