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 A181644 Eigentriangle for the Catalan triangle (c(x), xc(x)), A033184. 1
 1, 1, 1, 2, 1, 1, 6, 3, 1, 1, 22, 11, 4, 1, 1, 92, 46, 17, 5, 1, 1, 426, 213, 79, 24, 6, 1, 1, 2150, 1075, 399, 122, 32, 7, 1, 1, 11708, 5854, 2173, 665, 176, 41, 8, 1, 1, 68282, 34141, 12673, 3878, 1027, 242, 51, 9, 1, 1, 423948, 211974, 78683, 24075, 6373, 1502 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 COMMENTS First column is essentially A091768. Inverse of A181645. LINKS 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, 3, 1, 1, 22, 11, 4, 1, 1, 92, 46, 17, 5, 1, 1, 426, 213, 79, 24, 6, 1, 1, 2150, 1075, 399, 122, 32, 7, 1, 1, 11708, 5854, 2173, 665, 176, 41, 8, 1, 1 CROSSREFS Sequence in context: A201198 A120258 A201922 * A144351 A213936 A142589 Adjacent sequences:  A181641 A181642 A181643 * A181645 A181646 A181647 KEYWORD easy,nonn,tabl AUTHOR Paul Barry, Nov 03 2010 STATUS approved

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Last modified May 22 21:05 EDT 2019. Contains 323503 sequences. (Running on oeis4.)