OFFSET
1,1
LINKS
John Cerkan, Table of n, a(n) for n = 1..10000
PROG
(Python)
from sympy import factorint
def is_A064908(n):
f = factorint(n)
return (sum([f[i] for i in f]) == 2) and (max(f) % min(f) == 10) # John Cerkan, Apr 14 2018
(PARI) isok(n) = my(f = factor(n)); (#f~ == 2) && (vecmax(f[, 2]) < 2) && ((f[2, 1] % f[1, 1]) == 10); \\ Michel Marcus, Apr 16 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
Patrick De Geest, Oct 13 2001
EXTENSIONS
Offset changed by John Cerkan, Apr 12 2018
STATUS
approved