A195331 A080670 applied to A195330(n).

25, 26, 34, 112, 53, 27, 132, 35, 28, 172, 265, 73, 192, 353, 273, 345, 267, 235, 29, 232, 347, 54, 275, 273, 36, 283, 292, 537, 277, 312, 210, 373, 355, 254, 285, 113, 372, 236, 293, 412, 357, 573, 287, 432, 354, 211, 37, 133, 472, 74, 2355, 2254, 295, 2534, 2583, 2113, 2372, 2373, 2643, 532, 2811, 2589, 2236, 2723, 2647, 2103, 2597, 55, 2672, 2752, 2813, 2412, 3353, 2653, 2357, 2573, 2733, 592, 3443, 297, 365, 2432, 2729, 612, 2354, 2659, 3447, 2835, 2435, 2661, 2731

Offset

1,1

Comments

A195330 gives the numbers k such that A080670(k) < k; this sequence gives the corresponding values of A080670(k).

Links

Alois P. Heinz, Table of n, a(n) for n = 1..10000 (first 220 terms from Robert Price)

Maple

b:= proc(n) option remember; `if`(n=1, 1, (l->
      parse(cat(seq(`if`(l[i, 2]=1, l[i, 1], [l[i, 1],
      l[i, 2]][]), i=1..nops(l)))))(sort(ifactors(n)[2])))
    end:
g:= proc(n) option remember; local k; for k from
      `if`(n=1, 0, g(n-1))+1 while b(k)>=k do od; k
    end:
a:= n-> b(g(n)):
seq(a(n), n=1..100);  # Alois P. Heinz, Mar 17 2020

Mathematica

A080670 = Cases[Import["https://oeis.org/A080670/b080670.txt", "Table"], {_, _}][[All, 2]];
A195330 = Cases[Import["https://oeis.org/A195330/b195330.txt", "Table"], {_, _}][[All, 2]];
Table[A080670[[n]], {n, A195330}](* Robert Price, Mar 17 2020 *)

Crossrefs

Cf. A080670, A195330.

Sequence in context: A067810 A111168 A349865 * A175426 A045567 A141278

Adjacent sequences: A195328 A195329 A195330 * A195332 A195333 A195334

Keyword

nonn,base

Author

N. J. A. Sloane, Sep 15 2011

Status

approved