A274361 - OEIS

%I #5 Jun 19 2016 20:18:33

%S 5264,7695,13040,27135,33615,38960,41391,44144,54351,55808,62127,

%T 64719,70064,72495,77679,100624,101007,108783,108944,116720,124335,

%U 124496,132111,132272,139887,145232,160784,165807,176336,186704,191888,199375,202095

%N Numbers n such that n and n+1 both have 20 divisors.

%H Charles R Greathouse IV, <a href="/A274361/b274361.txt">Table of n, a(n) for n = 1..10000</a>

%o (PARI) is(n)=numdiv(n)==20 && numdiv(n+1)==20

%Y Intersection of A005237 and A030638.

%Y Cf. A000005, A274357.

%K nonn

%O 1,1

%A _Charles R Greathouse IV_, Jun 19 2016