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 A119628 Inverse permutation to sequence A083872. 1
 1, 2, 3, 5, 9, 4, 31, 6, 17, 10, 271, 7, 793, 32, 11, 18, 5377, 19, 14689, 12, 33, 272, 96001, 8, 161, 794, 97, 34, 917281, 13, 2332801, 61, 273, 5378, 35, 20, 19595521, 14690, 795, 14, 102435841, 36, 258048001, 274, 21, 96002, 1258709761, 22, 1585, 162, 5379 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Rémy Sigrist, Table of n, a(n) for n = 1..10000 FORMULA a(p) = A027423(p-1) + 1 for any prime number p. - Rémy Sigrist, Nov 08 2018 PROG (PARI) {m=31; v=[]; for(n=1, m, v=concat(v, vecsort(eval(setminus(Set(divisors(n!)), Set(v)))))); z=100; u=vector(z); for(j=1, #v, if(v[j]<=z, u[v[j]]=j)); i=1; while(u[i]>0, print1(u[i], ", "); i++)} \\ Klaus Brockhaus, Aug 16 2006 (PARI) a(n) = my (ff=1, f=1); for (i=1, oo, f*=i; if (f%n==0, return (numdiv(ff) + sum(j=1, n, ff%j!=0 && f%j == 0))); ff=f) \\ Rémy Sigrist, Nov 08 2018 CROSSREFS Cf. A027423, A083872. Sequence in context: A232562 A064358 A109736 * A021093 A011026 A069805 Adjacent sequences:  A119625 A119626 A119627 * A119629 A119630 A119631 KEYWORD nonn AUTHOR Leroy Quet, Jun 08 2006 EXTENSIONS a(11) to a(36) from Klaus Brockhaus, Aug 16 2006 More terms from Rémy Sigrist, Nov 08 2018 STATUS approved

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Last modified October 1 08:39 EDT 2020. Contains 337442 sequences. (Running on oeis4.)