OFFSET
1,2
LINKS
Michael S. Branicky, Table of n, a(n) for n = 1..49
Patrick De Geest, Palindromic Quasipronics of the form n(n+x)
FORMULA
PROG
(Python)
from itertools import count, islice
def ispal(n): s = str(n); return s == s[::-1]
def agen():
for k in count(0):
if ispal(k*(k+7)):
yield k*(k+7)
print(list(islice(agen(), 28))) # Michael S. Branicky, Jan 26 2022
CROSSREFS
KEYWORD
nonn,base
AUTHOR
EXTENSIONS
a(23) and beyond from Michael S. Branicky, Jan 26 2022
STATUS
approved