A380699 - OEIS

%I #6 Feb 02 2025 08:51:57

%S 0,1,2,4,5,6,7,9,10,11,12,16,17,18,19,20,25,26,27,28,29,30,31,36,37,

%T 38,39,40,41,42,52,53,54,55,56,57,58,59,60,64,65,66,67,68,69,70,71,72,

%U 73,81,82,83,84,85,86,87,88,89,90,100,101,102,103,104,105

%N Numbers m such that the set {A377091(k), k = 0..m} is an integer interval.

%C Equivalently, numbers m such that A380698(m) = 1.

%C Is this sequence infinite?

%H Rémy Sigrist, <a href="/A380699/b380699.txt">Table of n, a(n) for n = 1..10000</a>

%H Rémy Sigrist, <a href="/A380699/a380699.gp.txt">PARI program</a>

%e A380698(7) = 1, so 7 belongs to this sequence.

%e A380698(8) = 2, so 8 does not belong to this sequence.

%o (PARI) \\ See Links section.

%Y Cf. A377091, A380698.

%K nonn,new

%O 1,3

%A _Rémy Sigrist_, Jan 30 2025