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 A076954 #26 Dec 16 2022 17:37:42 %S A076954 1,2,18,2250,5402250,870037764750,4199506113235182750, %T A076954 1723219765760312626547490750,29266411525287522788837599332989370750, %U A076954 52713275010243038997421106186697438702252144407250,22176856087751973465466098269669474342964368337745368642450857250 %N A076954 a(n) = Product_{i=1..n} prime(i)^i. %C A076954 For n >= 3, a(n) ends in 250 or 750. - _Jianing Song_, Jan 27 2019 %H A076954 Gheorghe Coserea, <a href="/A076954/b076954.txt">Table of n, a(n) for n = 0..50</a> %F A076954 a(0) = 1, a(n+1) = a(n)*{prime(n+1)^(n+1)}. %p A076954 seq(mul(ithprime(i)^i,i=1..n),n=0..13); %t A076954 Table[Times@@Table[Prime[i]^i, {i, n}], {n, 10}] (* _Alonso del Arte_, Sep 30 2011 *) %t A076954 Join[{1},FoldList[Times,Table[Prime[i]^i,{i,10}]]] (* _Harvey P. Dale_, Dec 16 2022 *) %o A076954 (PARI) %o A076954 a(n) = { if (n <= 0, return(1)); prod(i = 1, n, prime(i)^i); } %o A076954 vector(11, i, a(i-1)) \\ _Gheorghe Coserea_, Aug 24 2015 %Y A076954 Cf. A076955, A006939. %Y A076954 Partial products of A062457. - _Michel Marcus_, Jan 28 2019 %K A076954 nonn %O A076954 0,2 %A A076954 _Amarnath Murthy_, Oct 20 2002 %E A076954 More terms from _Sascha Kurz_, Jan 22 2003