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 A376692 #8 Oct 01 2024 15:45:47 %S A376692 1,3,5,7,9,10,12,14,16,18,30,32,34,36,38,50,52,54,56,58,70,72,74,76, %T A376692 78,90,92,94,96,98,101,103,105,107,109,121,123,125,127,129,141,143, %U A376692 145,147,149,161,163,165,167,169,181,183,185,187,189,301,303,305,307,309 %N A376692 Numbers with the most significant digit odd and alternating parity of digits. %H A376692 Andrew Howroyd, <a href="/A376692/b376692.txt">Table of n, a(n) for n = 1..10000</a> %o A376692 (PARI) isok(n)=my(d=digits(n)); for(i=1, #d, if((d[i]-i)%2, return(0))); 1 %Y A376692 Complement of A062285 within A030141. %Y A376692 Cf. A030142, A030143, A080466. %K A376692 nonn,base %O A376692 1,2 %A A376692 _Andrew Howroyd_, Oct 01 2024