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 A059292 #24 Dec 21 2024 23:51:51
%S A059292 2,2,3,3,5,4,7,6,8,8,11,8,13,12,13,13,17,14,19,16,19,20,23,18,24,24,
%T A059292 25,24,29,24,31,28,31,32,33,29,37,36,37,34,41,36,43,40,41,44,47,40,48,
%U A059292 46,49,48,53,48,53,50,55,56,59,50,61,60,59,59,63,60,67
%N A059292 a(n) = n + 2 - (number of divisors of n).
%D A059292 L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 121, see #17.
%H A059292 Harry J. Smith, <a href="/A059292/b059292.txt">Table of n, a(n) for n = 1..5000</a>
%F A059292 a(n) = n + 2 - A000005(n) = A049820(n) + 2. - _Omar E. Pol_, Jul 16 2009
%t A059292 Table[n + 2 - DivisorSigma[0, n], {n,1,100}] (* _G. C. Greubel_, Jan 04 2017 *)
%o A059292 (PARI) a(n) = { n + 2 - numdiv(n) } \\ _Harry J. Smith_, Jun 25 2009
%o A059292 (Magma) [n+2-DivisorSigma(0, n): n in [1..100]]; // _Vincenzo Librandi_, Jan 05 2017
%Y A059292 Cf. A000005, A049820, A062968. - _Omar E. Pol_, Jul 16 2009
%K A059292 nonn
%O A059292 1,1
%A A059292 _N. J. A. Sloane_, Jan 25 2001