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%I #9 Jan 25 2022 21:02:58
%S 0,7,55,616,19591,76167,515515,749947,7474747,72999927,236799997632,
%T 769437734967,1900289820091,2998954598992,5170703070715,5934592954395,
%U 29175111157192,51175166157115,57154688645175,211106050601112,570608929806075,574823545328475
%N Palindromes of form k*(k+6).
%H Michael S. Branicky, <a href="/A028562/b028562.txt">Table of n, a(n) for n = 1..35</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) = A028561(n) * (A028561(n) + 6). - _Michael S. Branicky_, Jan 25 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+6)):
%o yield k*(k+6)
%o print(list(islice(agen(), 19))) # _Michael S. Branicky_, Jan 25 2022
%Y Cf. A028560, A028561.
%K nonn,base
%O 1,2
%A _Patrick De Geest_
%E a(20) and beyond from _Michael S. Branicky_, Jan 25 2022
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