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 A152254 #12 May 22 2023 02:51:20
%S A152254 2,12,104,1008,10272,107712,1150592,12451584,136053248,1497664512,
%T A152254 16583583744,184511361024,2061074178048,23100352413696,
%U A152254 259648659554304,2925683135152128,33037383972814848,373774017998094336,4235888981636022272,48076611822491271168
%N A152254 Twice A084773.
%D A152254 Andras Kornai, Mathematical Linguistics (Springer-Verlag 2008), p. 36. (Gives a sequence which matches the first five terms.)
%H A152254 G. C. Greubel, <a href="/A152254/b152254.txt">Table of n, a(n) for n = 0..930</a>
%t A152254 Table[2^(n+1)*LegendreP[n, 3], {n,0,40}] (* _G. C. Greubel_, May 22 2023 *)
%o A152254 (Magma) [2^(n+1)*Evaluate(LegendrePolynomial(n), 3): n in [0..40]]; // _G. C. Greubel_, May 22 2023
%o A152254 (SageMath) [2^(n+1)*gen_legendre_P(n,0,3) for n in range(41)] # _G. C. Greubel_, May 22 2023
%Y A152254 Cf. A000079, A001850, A084773.
%K A152254 nonn
%O A152254 0,1
%A A152254 Eric Bach (bach(AT)cs.wisc.edu), Oct 15 2009
%E A152254 Offset changed by _Petros Hadjicostas_, Feb 09 2021