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 A112762 #7 Feb 07 2020 08:22:04 %S A112762 0,0,0,0,1,0,0,0,1,0,1,0,0,1,0,2,0,1,0,0,1,1,0,2,0,1,0,0,2,1,0,1,0,2, %T A112762 0,1,3,0,1,0,2,1,0,1,0,2,0,2,1,0,3,0,1,0,2,1,0,1,3,0,2,1,0,2,1,0,3,0, %U A112762 1,0,2,4,1,0,2,1,0,3,0,2,1,0,2,1,0,3,0,1,3,0,2,1,4,1,0,2,1,0,3,0,2,1,0,2,4 %N A112762 Exponent of 5 (value of k) in n-th number of the form 2^i*3^j*5^k. %H A112762 Amiram Eldar, <a href="/A112762/b112762.txt">Table of n, a(n) for n = 1..10000</a> %F A112762 a(n) = A112765(A051037(n)); %F A112762 a(n) = A112759(n) - A112760(n) - A112761(n). %t A112762 IntegerExponent[#, 5] & /@ Select[Range[3000], Last @ Map[First, FactorInteger[#]] <= 5 &] (* _Amiram Eldar_, Feb 07 2020 *) %Y A112762 Cf. A022337, A051037, A112765, A112760, A112761. %K A112762 nonn %O A112762 1,16 %A A112762 _Reinhard Zumkeller_, Sep 18 2005