# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/

Search: id:a046203
Showing 1-1 of 1

%I A046203 #9 Jun 22 2013 16:05:38
%S A046203 2,2,6,4,12,12,4,20,30,20,6,30,60,60,30,6,42,140,42,8,56,168,280,280,
%T A046203 168,56,8,72,252,504,630,504,252,72,10,90,360,840,1260,1260,840,360,
%U A046203 90,10,110,1320,2310,2772,2310,1320,110,12,132,660,1980,3960,5544,5544
%N A046203 Even numbers in the triangle of denominators in Leibniz's Harmonic Triangle.
%D A046203 L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 83, Problem 25.
%e A046203 1/1; 1/2, 1/2; 1/3, 1/6, 1/3; 1/4, 1/12, 1/12, 1/4; 1/5, 1/20, 1/30, 1/20, 1/5; ...
%Y A046203 Cf. A003506.
%K A046203 tabf,nonn,easy
%O A046203 1,1
%A A046203 _Mohammad K. Azarian_
%E A046203 More terms from _James A. Sellers_, Dec 13 1999

# Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE