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A165489
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Eigensequence of triangle A084938
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3
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OFFSET
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1,3
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COMMENTS
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Triangle A084938 * [1, 1, 1, 2, 6, 23, 105, 550,...] shifts left to [1, 1, 2, 6, 23, 105, 550,...].
Eigentriangle A165490 = A084938 * its eigensequence, A165489 as a diagonalized infinite lower triangular matrix.
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LINKS
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Table of n, a(n) for n=1..10.
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FORMULA
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The sequence can be obtained by shifting down triangle A084938 one row, then inserting a "1" as the first term, obtaining a new triangle Q. Then take the Lim_{n->inf.} Q^n, obtaining a shifted left column vector = A165489 prefaced with a 1. Delete the first 1, obtaining [1, 1, 2, 6, 23, 105, 550, 3236,...].
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CROSSREFS
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Cf. A084938, A165490.
Sequence in context: A080108 A113227 A200406 * A192315 A193321 A125273
Adjacent sequences: A165486 A165487 A165488 * A165490 A165491 A165492
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KEYWORD
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eigen,nonn
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AUTHOR
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Gary W. Adamson, Sep 20 2009
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STATUS
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approved
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