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 A122978 #2 Mar 30 2012 17:35:16 %S A122978 1,3,3,7,3,12,3,15,7,12,3,37,3,12,12,31,3,37,3,37,12,12,3,103,7,12,15, %T A122978 37,3,73,3,63,12,12,12,146,3,12,12,103,3,73,3,37,37,12,3,271,7,37,12, %U A122978 37,3,103,12,103,12,12,3,319,3,12,37,127,12,73,3,37,12,73,3,505,3,12,37,37 %N A122978 Number of sublattices of the division lattice of divisors of n. %C A122978 A division lattice is closed under GCD and LCM. Depends only on the prime signature of n. %Y A122978 Cf. A051839, A122977, A122981, A122982. %K A122978 nonn %O A122978 1,2 %A A122978 _Franklin T. Adams-Watters_, Sep 21 2006