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 A329529 #13 May 10 2020 19:30:40 %S A329529 1,2,4,6,44,124,138,224,620,4884,17482,32130,83185,253576,276933, %T A329529 386916,888823,12359950,113944389,129750250,140503288,143011869 %N A329529 Numbers k such that the sum of first k lucky numbers, A046279(k), is divisible by k. %e A329529 4 is in the sequence since the sum of the first 4 lucky numbers, 1 + 3 + 7 + 9 = 20 is divisible by 4. %e A329529 The corresponding last lucky number in each sum, the sum and the quotient are: %e A329529 n a(n) A000959(a(n)) A046279(a(n)) A046279(a(n))/a(n) %e A329529 1 1 1 1 1 %e A329529 2 2 3 4 2 %e A329529 3 4 9 20 5 %e A329529 4 6 15 48 8 %e A329529 5 44 223 4488 102 %e A329529 6 124 777 44144 356 %e A329529 7 138 895 55890 405 %e A329529 8 224 1567 161280 720 %e A329529 9 620 5103 1466920 2366 %e A329529 10 4884 52291 120546888 24682 %e A329529 11 17482 213771 1777639688 101684 %e A329529 12 32130 416227 6378929550 198535 %e A329529 13 83185 1171177 46662209825 560945 %e A329529 14 253576 3902389 475856917960 1876585 %e A329529 15 276933 4289821 571527402075 2063775 %e A329529 16 386916 6145429 1145007096372 2959317 %e A329529 17 888823 14979331 6426527153917 7230379 %e A329529 18 12359950 245884005 1475626002615000 119387700 %e A329529 19 113944389 2555733867 141909851205948033 1245430797 %e A329529 20 129750250 2929396777 185255397118627500 1427784510 %e A329529 21 140503288 3184866705 218128021882008640 1552476280 %e A329529 22 143011869 3244610263 226192450002239721 1581634109 %Y A329529 Cf. A000959, A045345, A046279. %Y A329529 Cf. also A329528. %K A329529 nonn,more %O A329529 1,2 %A A329529 _Amiram Eldar_, Nov 15 2019 %E A329529 a(19)-a(22) from _Giovanni Resta_, May 10 2020