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 A364445 #8 Aug 01 2023 09:55:26 %S A364445 1,4,6,9,12,13,17,19,21,25,26,28,32,33,35,37,39,41,43,45,46,50,52,53, %T A364445 56,59,60,63,64,66,68,70,72,74,77,79,80,82,84,86,88,90,92,93,96,98,99, %U A364445 102,105,106,108,112,113,116,118,119,120,123,124,127,129,132,133 %N A364445 Complement of A364444. %C A364445 Compared to A364444, this sequence is what A363762 is to A077773. %o A364445 (Python) %o A364445 from itertools import count, islice %o A364445 def A364445_gen(): # generator of terms %o A364445 a = 0 %o A364445 for n in count(1): %o A364445 b = sum(1 for k in range(n**2+1,(n+1)**2) if (m:=(~k&k-1).bit_length())&1 or (k>>m)&7<7) %o A364445 yield from range(a+1,b) %o A364445 a = b %o A364445 A364445_list = list(islice(A364445_gen(),20)) # _Chai Wah Wu_, Aug 01 2023 %Y A364445 Cf. A004215, A077773, A363762. %K A364445 nonn %O A364445 1,2 %A A364445 _Hugo Pfoertner_, Aug 01 2023