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 A366687 Number of prime factors of 11^n + 1 (counted with multiplicity). 7
 1, 3, 2, 5, 2, 4, 4, 4, 3, 7, 3, 7, 4, 6, 5, 8, 3, 6, 5, 7, 4, 7, 4, 7, 7, 6, 3, 10, 6, 6, 6, 7, 4, 13, 6, 11, 7, 5, 4, 11, 5, 6, 9, 5, 6, 13, 6, 7, 5, 8, 6, 11, 3, 7, 9, 13, 7, 12, 6, 7, 8, 6, 4, 13, 3, 10, 8, 9, 7, 14, 8, 6, 10, 8, 8, 13, 6, 12, 12, 7, 10 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Max Alekseyev, Table of n, a(n) for n = 0..325 FORMULA a(n) = bigomega(11^n+1) = A001222(A034524(n)). MATHEMATICA PrimeOmega[11^Range[70]+1] PROG (PARI) a(n)=bigomega(11^n+1) CROSSREFS Cf. A034524, A001222, A057934, A062308, A366686, A366688, A366689, A366690. Cf. A054992, A057941, A057940, A057939, A057938, A057937, A057936, A057935, A057934, A366713. Sequence in context: A208889 A127750 A112528 * A154421 A057034 A075410 Adjacent sequences: A366684 A366685 A366686 * A366688 A366689 A366690 KEYWORD nonn AUTHOR Sean A. Irvine, Oct 16 2023 STATUS approved

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Last modified May 26 18:12 EDT 2024. Contains 372840 sequences. (Running on oeis4.)