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 A070713 #4 Jun 10 2024 21:15:03 %S A070713 1,4,9,22,88,144,414,441,466,646,664,889,898,988,1111,1177,1224,1242, %T A070713 1339,1393,1422,1717,1771,1933,2124,2142,2214,2241,2266,2338,2383, %U A070713 2412,2421,2626,2662,2833,3139,3193,3238,3283,3319,3328,3355,3382,3391,3535 %N A070713 Integers whose sum of digits as well as product of digits is a nonzero square. %e A070713 3931 is a member of this sequence as 3+9+3+1=16=4^2 and 3*9*3*1=81=9^2. %Y A070713 Cf. A028839. %K A070713 nonn,base %O A070713 1,2 %A A070713 John E. Lenz (jel5010(AT)yahoo.com), May 13 2002