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a(n) indicates the index of A361109 in C (A361102).
4

%I #15 Mar 03 2023 06:02:02

%S 1,2,3,3,3,4,4,4,4,4,5,5,5,9,9,10,10,10,11,11,11,11,11,11,11,11,11,18,

%T 18,18,18,22,22,22,22,24,24,24,24,28,28,28,28,29,29,29,29,29,29,29,29,

%U 29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,38,38

%N a(n) indicates the index of A361109 in C (A361102).

%H Rémy Sigrist, <a href="/A361110/b361110.txt">Table of n, a(n) for n = 1..10000</a>

%H Rémy Sigrist, <a href="/A361110/a361110.gp.txt">PARI program</a>

%H N. J. A. Sloane, <a href="/A360519/a360519.pdf">Table showing A360519(1)-A360519(13)</a>, also the smallest missing number (smn, A361109 and A361110), binary vectors showing which terms are divisible by the primes 2, 3, 5, 7, 11; and phi, a decimal representation of those binary vectors (A361111). This sequence forms the fourth row of the table.

%e After we have calculated A360519(4) = 35, the smallest term of C that is missing from A360519 is 12 = C(3) = A361102(3), so a(4) = 3.

%o (PARI) See Links section.

%Y Cf. A360519, A361102, A361109.

%K nonn

%O 1,2

%A _Scott R. Shannon_ and _N. J. A. Sloane_, Mar 03 2023

%E More terms from _Rémy Sigrist_, Mar 03 2023