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.

A075182 Greatest common divisors of rows of triangle A075181 and of (unsigned) triangle A048594.

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%I A075182 #11 Aug 08 2024 07:01:45
%S A075182 1,1,2,2,2,2,24,24,24,24,48,48,48,48,384,1152,1152,1152,2304,2304,
%T A075182 11520,11520,46080,46080,414720,414720,829440,829440,829440,829440,
%U A075182 13271040,13271040,13271040,39813120,79626240,79626240,79626240,79626240,318504960,318504960
%N A075182 Greatest common divisors of rows of triangle A075181 and of (unsigned) triangle A048594.
%F A075182 a(n) = gcd(A075181(n, m), m=1..n) = gcd(|A048594(n, m)|, m=1..n), n>=1.
%e A075182 Row n=3 of triangle A075181 is [6,6,2], hence a(3)=2.
%t A075182 a[n_] := GCD @@ Table[k! * Abs[StirlingS1[n, k]], {k, 1, n}]; Array[a, 40] (* _Amiram Eldar_, Aug 08 2024 *)
%Y A075182 Cf. A048594, A075181.
%K A075182 nonn,easy
%O A075182 1,3
%A A075182 _Wolfdieter Lang_, Sep 19 2002
%E A075182 More terms from _Amiram Eldar_, Aug 08 2024