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 A074696 #17 May 10 2022 10:03:36 %S A074696 0,1,30,42,45,50,54,63,70,75,78,81,90,99,102,105,114,118,126,130,135, %T A074696 138,150,153,154,162,165,168,170,171,174,175,177,180,182,186,189,190, %U A074696 194,195,196,198,204,210,216,220,222,225,228,230,231,234,238 %N A074696 Numbers k such that 2^k+1 has more than k divisors (k such that A000005(2^k+1) > k). %H A074696 Amiram Eldar, <a href="/A074696/b074696.txt">Table of n, a(n) for n = 1..441</a> %t A074696 Select[Range[0, 150], DivisorSigma[0, 2^#+1] > # &] (* _Amiram Eldar_, May 10 2022 *) %o A074696 (PARI) isok(n) = numdiv(2^n+1) > n; \\ _Michel Marcus_, Nov 29 2013 %Y A074696 Cf. A000005, A046798. %K A074696 nonn %O A074696 1,3 %A A074696 _Benoit Cloitre_, Sep 03 2002 %E A074696 More terms from _Michel Marcus_, Nov 29 2013 %E A074696 a(1) = 0 inserted by _Amiram Eldar_, May 10 2022