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 A328621 Multiplicative with a(p^e) = p^(2e mod p). 2
 1, 1, 9, 1, 25, 9, 49, 1, 3, 25, 121, 9, 169, 49, 225, 1, 289, 3, 361, 25, 441, 121, 529, 9, 625, 169, 1, 49, 841, 225, 961, 1, 1089, 289, 1225, 3, 1369, 361, 1521, 25, 1681, 441, 1849, 121, 75, 529, 2209, 9, 2401, 625, 2601, 169, 2809, 1, 3025, 49, 3249, 841, 3481, 225, 3721, 961, 147, 1, 4225, 1089, 4489, 289, 4761, 1225, 5041, 3, 5329 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS Antti Karttunen, Table of n, a(n) for n = 1..16384 PROG (PARI) A328621(n) = { my(f = factor(n)); for(k=1, #f~, f[k, 2] = ((2*f[k, 2])%f[k, 1])); factorback(f); }; CROSSREFS Cf. A011262, A327938, A328618 (a bijective variant). Sequence in context: A013616 A205381 A237587 * A191871 A181318 A202006 Adjacent sequences: A328618 A328619 A328620 * A328622 A328623 A328624 KEYWORD nonn,mult AUTHOR Antti Karttunen, Oct 23 2019 STATUS approved

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Last modified May 20 14:08 EDT 2024. Contains 372717 sequences. (Running on oeis4.)