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 A384798 #13 Jul 07 2025 20:28:23 %S A384798 2,3,4,5,7,8,9,10,12,14,15,17,18,19,21,22,23,26,27,28,31,34,37,38,39, %T A384798 40,42,44,49,51,56,58,64,69,71,73,77,79,82,92,94,101,104,108,109,111, %U A384798 116,118,120,129,136,140,141,155,160,172,174,181,190,193,194,208,209 %N A384798 Records in A384797. %H A384798 Hugo Pfoertner, <a href="/A384798/b384798.txt">Table of n, a(n) for n = 1..1113</a> %o A384798 (Python) %o A384798 from itertools import count, islice %o A384798 def A384798_gen(): # generator of terms %o A384798 s, m = {0}, 1 %o A384798 for n in count(1): %o A384798 c = n+1 %o A384798 for i in range(n+1): %o A384798 if (k:=n**2+i**2) in s: %o A384798 c -= 1 %o A384798 else: %o A384798 s.add(k) %o A384798 if c>m: %o A384798 yield c %o A384798 m = c %o A384798 A384798_list = list(islice(A384798_gen(),30)) # _Chai Wah Wu_, Jul 07 2025 %Y A384798 Cf. A047800, A384797, A384799. %K A384798 nonn %O A384798 1,1 %A A384798 _Hugo Pfoertner_, Jun 17 2025