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 A140280 #13 Jul 06 2025 10:39:10
%S A140280 1,1,1,1,2,1,1,3,3,1,1,4,6,4,1,1,5,0,0,5,1,1,6,5,0,5,6,1,1,7,2,15,15,
%T A140280 2,7,1,1,8,16,30,0,30,16,8,1,1,9,18,32,12,12,32,18,9,1,1,0,20,0,0,20,
%U A140280 0,0,20,0,1,1,1,25,30,0,48,48,0,30,25,1,1
%N A140280 Product of digits of values in Pascal's triangle, by rows.
%F A140280 T(n, k) = A007954(A007318(n, k)).
%e A140280 1
%e A140280 1, 1
%e A140280 1, 2, 1
%e A140280 1, 3, 3, 1
%e A140280 1, 4, 6, 4, 1
%e A140280 1, 5, 1*0=0, 1*0=0, 5, 1
%e A140280 1, 6, 1*5=5, 2*0=0, 1*5=5, 6, 1
%e A140280 1, 7, 2*1=2, 3*5=15, 3*5=15, 2*1=2, 7, 1
%e A140280 1, 8, 2*8=16, 5*6=30, 7*0=0, 5*6=30, 2*8=16, 8, 1
%e A140280 1, 9, 3*6=18, 8*4=32, 1*2*6=12, 1*2*6=12, 8*4=32, 3*6=18, 9, 1
%e A140280 1, 1*0=0, 4*5=20, 1*2*0=0, 2*1*0=0, 2*5*2=20, 2*1*0=0, 1*2*0=0, 4*5=20, 1*0=0, 1
%e A140280 1, 1*1=1, 5*5=25, 1*6*5=30, 3*3*0=0, 4*6*2=48, 4*6*2=48, 3*3*0=0, 1*6*5=30, 5*5=25, 1*1=1, 1
%t A140280 Times@@@IntegerDigits@Flatten[Table[Binomial[n, k], {n, 0, 11}, {k, 0, n}]] (* _James C. McMahon_, Jul 06 2025 *)
%Y A140280 Cf. A007318, A007954.
%K A140280 easy,nonn,tabl,base
%O A140280 0,5
%A A140280 _Jonathan Vos Post_, May 31 2008
%E A140280 Offset changed to 0 by _Georg Fischer_, Dec 19 2020