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Number of n X n binary arrays symmetric about the diagonal and under 90-degree rotation with all ones connected only in a 1 X 5 or 5 X 1 block.

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`%I #6 Nov 25 2018 23:42:03
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`%S 1,1,1,1,1,1,2,1,3,1,6,1,15,3,43,8,140,27,656,89,3196,333,18641,1310,
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`%T 125685,7293,1010276,48975,9527791,401989
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`%N Number of n X n binary arrays symmetric about the diagonal and under 90-degree rotation with all ones connected only in a 1 X 5 or 5 X 1 block.
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`%e Maximal 9 X 9 example:
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`%e 0 0 0 0 0 0 0 0 0
`

`%e 0 0 1 1 1 1 1 0 0
`

`%e 0 1 0 0 0 0 0 1 0
`

`%e 0 1 0 0 0 0 0 1 0
`

`%e 0 1 0 0 0 0 0 1 0
`

`%e 0 1 0 0 0 0 0 1 0
`

`%e 0 1 0 0 0 0 0 1 0
`

`%e 0 0 1 1 1 1 1 0 0
`

`%e 0 0 0 0 0 0 0 0 0
`

`%K nonn
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`%O 1,7
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`%A _R. H. Hardin_, Oct 25 2008
`