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.

A212231 Number of 0..2 arrays of length n+13 with sum no more than 14 in any length 14 subsequence (=50% duty cycle).

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%I A212231 #6 Jun 02 2025 07:55:50
%S A212231 2699598,7269626,19976155,55360211,154089343,429886243,1200645159,
%T A212231 3354267511,9367667604,26139182862,72841658426,202630826716,
%U A212231 562443898300,1557047060794,4296908081691,11867091374754,32817710013245
%N A212231 Number of 0..2 arrays of length n+13 with sum no more than 14 in any length 14 subsequence (=50% duty cycle).
%C A212231 Column 7 of A212232
%H A212231 R. H. Hardin, <a href="/A212231/b212231.txt">Table of n, a(n) for n = 1..39</a>
%e A212231 Some solutions for n=3
%e A212231 ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e A212231 ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e A212231 ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e A212231 ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e A212231 ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e A212231 ..0....0....0....1....0....1....0....0....1....0....0....1....1....1....1....1
%e A212231 ..1....2....0....1....0....1....1....1....0....0....0....1....2....1....2....0
%e A212231 ..2....1....1....1....2....0....0....0....2....1....2....2....0....2....0....1
%e A212231 ..2....2....1....1....0....2....0....0....2....2....0....2....1....2....2....0
%e A212231 ..0....2....2....2....0....2....1....2....0....1....2....0....2....0....1....2
%e A212231 ..2....0....0....1....2....2....0....1....0....0....0....0....2....1....1....1
%e A212231 ..1....0....1....0....0....2....2....1....0....1....0....2....0....0....0....0
%e A212231 ..0....1....2....1....1....1....0....2....1....0....1....1....2....0....1....1
%e A212231 ..0....1....1....2....1....0....0....2....1....1....1....0....1....1....1....2
%e A212231 ..2....0....2....2....0....2....0....0....2....2....2....2....1....0....1....2
%e A212231 ..2....0....0....1....0....0....2....0....1....1....2....0....2....0....2....1
%K A212231 nonn
%O A212231 1,1
%A A212231 _R. H. Hardin_ May 06 2012