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%I #12 Feb 13 2022 12:19:30
%S 0,22,252,2332,20002,26062,29392,63736,68886,2701072,2783872,2884882,
%T 29122192,253080352,289050982,25661316652,237776677732,2393677763932,
%U 215331808133512,218759969957812,225588939885522,235212787212532,636759171957636,682911868119286
%N Palindromes of form k*(k+9).
%H Michael S. Branicky, <a href="/A028571/b028571.txt">Table of n, a(n) for n = 1..42</a>
%H P. De Geest, <a href="http://www.worldofnumbers.com/consemor.htm">Palindromic Quasipronics of the form n(n+x)</a>
%F a(n) = A028570(n) * (A028570(n) + 9). - _Michael S. Branicky_, Jan 26 2022
%t Select[Table[k(k+9),{k,0,262*10^5}],PalindromeQ] (* _Harvey P. Dale_, Feb 13 2022 *)
%o (Python)
%o from itertools import count, islice
%o def ispal(n): s = str(n); return s == s[::-1]
%o def agen():
%o for k in count(0):
%o if ispal(k*(k+9)):
%o yield k*(k+9)
%o print(list(islice(agen(), 18))) # _Michael S. Branicky_, Jan 26 2022
%Y Cf. A028569, A028570.
%K nonn,base
%O 1,2
%A _Patrick De Geest_
%E a(22) and beyond from _Michael S. Branicky_, Jan 26 2022
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