cp's OEIS Frontend

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.

A093325 Numbers that are divisible by the sum of the factorials of their digits.

This page as a plain text file.
%I A093325 #13 Sep 08 2022 08:45:13
%S A093325 1,2,10,12,21,32,104,111,112,120,145,200,220,222,224,341,403,441,1000,
%T A093325 1020,1100,1120,1122,1200,1204,1210,1212,1230,1232,1320,1330,2000,
%U A093325 2010,2030,2100,2110,2112,2123,2125,2130,2204,2212,2232,2250,2300,2310,2321
%N A093325 Numbers that are divisible by the sum of the factorials of their digits.
%H A093325 Amiram Eldar, <a href="/A093325/b093325.txt">Table of n, a(n) for n = 1..10000</a>
%e A093325 104 is a term because 1!+0!+4!=26 and 104/26=4.
%t A093325 seqQ[n_] := Divisible[n, Total@(Factorial /@ IntegerDigits[n])]; Select[Range[2500], seqQ] (* _Amiram Eldar_, Dec 16 2019 *)
%o A093325 (Magma) f:=func< n|&+[Factorial(Intseq(n)[i]):i in [1..#Intseq(n)]]>; [k:k in [1..2500]| k mod f(k) eq 0]; // _Marius A. Burtea_, Dec 16 2019
%Y A093325 Cf. A005349, A061602.
%K A093325 base,easy,nonn
%O A093325 1,2
%A A093325 _Jason Earls_, May 11 2004