OFFSET
1,2
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 (some terms corrected by Andrew Howroyd)
FORMULA
PROG
(Haskell)
a258570 = a020639 . a069492
(PARI) lista(kmax) = {my(f); print1(1, ", "); for(k = 2, kmax, f = factor(k); if(vecmin(f[, 2]) > 4, print1(f[1, 1], ", "))); } \\ Amiram Eldar, Sep 12 2024
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Jun 06 2015
STATUS
approved