OFFSET
1,1
COMMENTS
Contains 10^m - 3 hence the sequence is infinite. - David A. Corneth, Feb 20 2024
LINKS
Chai Wah Wu, Table of n, a(n) for n = 1..10000
PROG
(Python)
from itertools import count, islice
from sympy import sqrt_mod
def A116288_gen(): # generator of terms
for j in count(0):
b = 10**j
a = b*10+1
for k in sorted(sqrt_mod(4, a, all_roots=True)):
if a*b <= k**2-4 < a*(a-1):
yield k-2
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved