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A062410
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Square spiral sequence: numbers are placed in a square spiral, a(1)=1, a(n) is found as the sum of the row (in the previous direction) a(n-1) is in.
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3
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1, 1, 2, 3, 4, 9, 11, 24, 28, 31, 94, 105, 114, 344, 375, 403, 427, 1663, 1777, 1882, 1976, 7725, 8152, 8555, 8930, 9274, 44612, 46588, 48470, 50247, 51910, 251101, 260375, 269305, 277860, 286012, 293737, 1690300, 1742210, 1792457, 1840927
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OFFSET
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1,3
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LINKS
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EXAMPLE
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The initial part of the square spiral sequence is
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344-114
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4---3---2 105
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9 1---1 94
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11--24--28--31
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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