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A209051 Number of nX1 0..6 arrays with every element value z a city block distance of exactly z from another element value z 1

%I

%S 1,2,5,12,33,99,319,980,2966,8776,26196,77510,234031,708205,2132677,

%T 6421621,19225005,57566221,172152197,515505478,1541863101,4618183861,

%U 13838387169,41464367959,124065165161,371090483661,1110570396650

%N Number of nX1 0..6 arrays with every element value z a city block distance of exactly z from another element value z

%C Column 1 of A209054

%H R. H. Hardin, <a href="/A209051/b209051.txt">Table of n, a(n) for n = 1..210</a>

%e All solutions for n=4

%e ..0....1....0....1....3....0....0....3....2....0....1....2

%e ..0....1....1....1....0....0....1....1....2....2....1....0

%e ..1....0....1....1....0....0....1....1....2....0....1....2

%e ..1....0....1....0....3....0....0....3....2....2....1....0

%K nonn

%O 1,2

%A _R. H. Hardin_ Mar 04 2012

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Last modified August 19 23:59 EDT 2022. Contains 356231 sequences. (Running on oeis4.)