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 A078488 #14 Aug 24 2020 22:26:16
%S A078488 -25,300,-2300,12650,-53130,177100,-480700,1081575,-2042975,3268760,
%T A078488 -4457400,5200300,-5200300,4457400,-3268760,2042975,-1081575,480700,
%U A078488 -177100,53130,-12650,2300,-300,25
%N A078488 First differences of coefficients of g.f. (1-x)^24.
%F A078488 a(n) = (-1)^n * binomial(25,n). - _Georg Fischer_, Aug 24 2020
%t A078488 Differences@ CoefficientList[Series[(1 - x)^24, {x, 0, 24}], x] (* _Michael De Vlieger_, Aug 24 2020 *)
%o A078488 (PARI) y=(1-x)^24; for (n=1,24,print1(polcoeff(y,n)-polcoeff(y,n-1)","))
%Y A078488 Cf. A010940, A010941.
%K A078488 sign,less,fini,full
%O A078488 1,1
%A A078488 _Jon Perry_, Jan 04 2003
%E A078488 Definition corrected by _Michel Marcus_ and _Georg Fischer_, Aug 24 2020