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A186023
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Eigentriangle of triangle A085478.
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0
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1, 1, 1, 2, 1, 1, 6, 4, 1, 1, 23, 15, 6, 1, 1, 106, 68, 28, 8, 1, 1, 567, 365, 145, 45, 10, 1, 1, 3434, 2215, 877, 262, 66, 12, 1, 1, 23137, 14917, 5936, 1750, 427, 91, 14, 1, 1, 171174, 110324, 43936, 13020, 3108, 648, 120, 16, 1, 1, 1376525, 887232, 353067, 104904, 25125, 5091, 933, 153, 18, 1, 1
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,4
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COMMENTS
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First column is A125273. Inverse of A186024. Rows sums are A125273(n)*(2-0^n).
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REFERENCES
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P. Barry, Invariant number triangles, eigentriangles and Somos-4 sequences, Arxiv preprint arXiv:1107.5490, 2011.
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LINKS
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Table of n, a(n) for n=0..65.
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EXAMPLE
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Triangle begins
1,
1, 1,
2, 1, 1,
6, 4, 1, 1,
23, 15, 6, 1, 1,
106, 68, 28, 8, 1, 1,
567, 365, 145, 45, 10, 1, 1,
3434, 2215, 877, 262, 66, 12, 1, 1,
23137, 14917, 5936, 1750, 427, 91, 14, 1, 1,
171174, 110324, 43936, 13020, 3108, 648, 120, 16, 1, 1
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CROSSREFS
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Cf. A186020.
Sequence in context: A172400 A158389 A186287 * A103880 A135899 A047920
Adjacent sequences: A186020 A186021 A186022 * A186024 A186025 A186026
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KEYWORD
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nonn,tabl
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AUTHOR
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Paul Barry, Feb 10 2011
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STATUS
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approved
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