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 A053204 #13 Jul 02 2025 16:01:59 %S A053204 0,0,2,2,4,2,10,2,16,8,14,2,28,2,46,38,64,2,46,2,76,50,70,2,136,32,82, %T A053204 80,156,2,244,2,256,74,38,88,172,2,118,86,256,2,442,2,324,332,326,2, %U A053204 592,128,274,416,432,2,676,98,648,122,410,2,796,2,934,386,960,292,526 %N A053204 Row sums of A053200. %C A053204 a(prime(n)) = 2, where prime(n) = prime numbers A000040, excluding the case where a(1) = 2. %H A053204 Reinhard Zumkeller, <a href="/A053204/b053204.txt">Table of n, a(n) for n = 0..1000</a> %e A053204 a(6) = 1 + 0 + 3 + 2 + 3 + 0 + 1 = 10. %o A053204 (Haskell) %o A053204 a053204 = sum . a053200_row -- _Reinhard Zumkeller_, Jan 01 2013 %Y A053204 Cf. A053200. %K A053204 nonn,easy %O A053204 0,3 %A A053204 _Asher Auel_, Dec 12 1999 %E A053204 Corrected and extended by _James Sellers_, Dec 13 1999 %E A053204 Initial terms adjusted by _Reinhard Zumkeller_, Jan 01 2013