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Revision History for A280857 (Bold, blue-underlined text is an addition; faded, red-underlined text is a deletion.)

Showing all changes.
Number of nX6 0..2 arrays with no element equal to more than one of its king-move neighbors and with new values introduced in order 0 sequentially upwards.
(history; published version)
#4 by R. H. Hardin at Mon Jan 09 09:36:38 EST 2017
STATUS

editing

approved

#3 by R. H. Hardin at Mon Jan 09 09:36:34 EST 2017
LINKS

R. H. Hardin, <a href="/A280857/b280857.txt">Table of n, a(n) for n = 1..210</a>

#2 by R. H. Hardin at Mon Jan 09 09:36:14 EST 2017
NAME

allocated for R. H. Hardin

Number of nX6 0..2 arrays with no element equal to more than one of its king-move neighbors and with new values introduced in order 0 sequentially upwards.

DATA

82, 1708, 678, 462, 491, 712, 1202, 2268, 4220, 7108, 11240, 17330, 26934, 43062, 70776, 117452, 193842, 316394, 511776, 825074, 1333130, 2163076, 3521462, 5738446, 9343090, 15187700, 24659768, 40027188, 64994524, 105599072, 171639520

OFFSET

1,1

COMMENTS

Column 6 of A280859.

FORMULA

Empirical: a(n) = a(n-1) +a(n-2) -a(n-3) +a(n-4) +6*a(n-7) -5*a(n-8) +3*a(n-9) -3*a(n-10) -3*a(n-11) +2*a(n-12) -4*a(n-13) +a(n-14) -2*a(n-15) -2*a(n-16) for n>22

EXAMPLE

Some solutions for n=4

..0..1..1..2..2..1. .0..1..0..1..1..2. .0..1..0..1..0..1. .0..0..1..2..2..0

..0..2..0..0..1..0. .1..2..0..2..0..0. .2..1..2..1..2..2. .1..2..1..0..1..0

..1..2..1..2..2..0. .0..2..1..2..1..2. .2..0..2..0..0..1. .1..0..2..0..2..1

..1..0..1..0..1..1. .1..0..1..0..1..0. .1..0..1..1..2..2. .2..0..1..1..2..0

CROSSREFS

Cf. A280859.

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Jan 09 2017

STATUS

approved

editing

#1 by R. H. Hardin at Mon Jan 09 09:30:10 EST 2017
NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved