This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A341204 #7 Feb 07 2021 12:51:17
%S A341204 1,7,28,84,210,462,924,1716,3003,4998,7966,12222,18123,26054,36408,
%T A341204 49560,65835,85470,108591,135163,164976,197632,232547,268968,306005,
%U A341204 342678,377979,410914,440630,466417,487788,504511,516621,524412,528409,529320,528003,525308,522144
%N A341204 Number of ways to write n as an ordered sum of 7 nonzero decimal palindromes.
%H A341204 Alois P. Heinz, <a href="/A341204/b341204.txt">Table of n, a(n) for n = 7..10000</a>
%t A341204 nmax = 45; CoefficientList[Series[Sum[Boole[PalindromeQ[k]] x^k, {k, 1, nmax}]^7, {x, 0, nmax}], x] // Drop[#, 7] &
%Y A341204 Cf. A002113, A136522, A319472, A341165, A341184, A341191, A341192, A341193, A341203, A341205, A341206, A341207.
%K A341204 nonn,base
%O A341204 7,2
%A A341204 _Ilya Gutkovskiy_, Feb 06 2021