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 A112357 #10 Sep 06 2024 16:51:36
%S A112357 1,3,11,243,365537,19304303788473,1250033478133613116903743692225,
%T A112357 7355069116914166372074595432733192295583026786908016407724348346449
%N A112357 Row sums of A112356.
%C A112357 Next term, a(8), has 141 digits and is too large to include. - _R. J. Mathar_, May 19 2006
%o A112357 (PARI) A112356(n)= { local(resul,piv,a) ; resul=[1] ; piv=2 ; for(col=1,n, a=piv ; piv++ ; for(c=2,binomial(n,col), a *= piv; piv++ ; ) ; resul=concat(resul,a) ; ) ; return(resul) ; }
%o A112357 A112357(n)= { local(row,rowl); row=A112356(n) ; rowl=matsize(row) ; return(sum(i=1,rowl[2],row[i])) ; }
%o A112357 { for(row=0,8, print(A112357(row)) ; ) ; } \\ _R. J. Mathar_, May 19 2006
%Y A112357 Cf. A112356.
%K A112357 easy,nonn
%O A112357 0,2
%A A112357 _Amarnath Murthy_, Sep 05 2005
%E A112357 More terms from _R. J. Mathar_, May 19 2006