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A167144
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Column 0 of the matrix 4th power of triangle A167015.
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4
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1, 4, 14, 70, 503, 4898, 60517, 899764, 15496561, 301137820, 6483583802, 152689979223, 3896718655702, 107010852239903, 3144913162405021, 98469727935174977, 3272516761148911378, 115063890523670839944
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OFFSET
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0,2
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COMMENTS
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This sequence equals the reversal of row 4 of A167015 (when extended infinitely to the left), and then shifted left 1 place.
In triangle T=A167015, row n of T equals the initial n terms in column 0 of matrix power T^n, reversed and with an appended '1'.
The definition of A167015 may be relaxed to allow the triangle to extend indefinitely also to the left, making each row infinite.
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LINKS
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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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