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 A358225 Numbers k such that A276086(k) mod k is an odd number, where A276086 is the primorial base exp-function. 4
 2, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 16, 18, 19, 20, 21, 22, 23, 24, 26, 28, 29, 30, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 44, 45, 46, 47, 48, 49, 50, 52, 53, 54, 55, 56, 58, 60, 61, 62, 64, 65, 66, 67, 68, 69, 70, 72, 73, 74, 76, 78, 79, 80, 81, 82, 84, 86, 88, 89, 90, 91, 92, 94, 96, 97, 98, 99, 100, 101 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..80. Index entries for sequences related to primorial base FORMULA {k | A328386(k) == 1 (mod 2)}. PROG (PARI) A276086(n) = { my(m=1, p=2); while(n, m *= (p^(n%p)); n = n\p; p = nextprime(1+p)); (m); }; A358224(n) = ((A276086(n)%n)%2); isA358225(n) = A358224(n); CROSSREFS Cf. A000035, A005843 (subsequence after 0), A276086, A328386, A358225 (characteristic function), A358226 (complement), A358231 (subsequence). Cf. also A358228. Sequence in context: A374486 A039246 A201997 * A039158 A030771 A026509 Adjacent sequences: A358222 A358223 A358224 * A358226 A358227 A358228 KEYWORD nonn AUTHOR Antti Karttunen, Nov 25 2022 STATUS approved

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Last modified September 11 08:57 EDT 2024. Contains 375814 sequences. (Running on oeis4.)