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A186023 Eigentriangle of triangle A085478. 0
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)
OFFSET

0,4

COMMENTS

First column is A125273. Inverse of A186024. Rows sums are A125273(n)*(2-0^n).

LINKS

Table of n, a(n) for n=0..65.

P. Barry, Invariant number triangles, eigentriangles and Somos-4 sequences, arXiv preprint arXiv:1107.5490, 2011.

EXAMPLE

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

CROSSREFS

Cf. A186020.

Sequence in context: A226691 A158389 A186287 * A103880 A135899 A047920

Adjacent sequences:  A186020 A186021 A186022 * A186024 A186025 A186026

KEYWORD

nonn,tabl

AUTHOR

Paul Barry, Feb 10 2011

STATUS

approved

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Last modified November 28 19:03 EST 2014. Contains 250392 sequences.