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 A247023 Riordan array (1/(1-2*x), x*C(x)) where C(x) is the o.g.f. of Catalan numbers A000108. 2
 1, 2, 1, 4, 3, 1, 8, 8, 4, 1, 16, 21, 13, 5, 1, 32, 56, 40, 19, 6, 1, 64, 154, 122, 66, 26, 7, 1, 128, 440, 376, 222, 100, 34, 8, 1, 256, 1309, 1181, 741, 365, 143, 43, 9, 1, 512, 4048, 3792, 2483, 1302, 561, 196, 53, 10, 1, 1024, 12958, 12446, 8398, 4606 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Row sums are A014318. Mirror image of the triangle in A201634. LINKS Reinhard Zumkeller, Rows n = 0..125 of triangle, flattened FORMULA T(n,0) = 2^n = A000079(n). T(n+1,1) = A014318(n). EXAMPLE Triangle begins 1 2, 1 4, 3, 1 8, 8, 4, 1 16, 21, 13, 5, 1 32, 56, 40, 19, 6, 1 64, 154, 122, 66, 26, 7, 1 Production matrix begins 2, 1 0, 1, 1 0, 1, 1, 1 0, 1, 1, 1, 1 0, 1, 1, 1, 1, 1 0, 1, 1, 1, 1, 1, 1 0, 1, 1, 1, 1, 1, 1, 1 PROG (Haskell) a247023 n k = a247023_tabl !! n !! k a247023_row n = a247023_tabl !! n a247023_tabl = map reverse a201634_tabl -- Reinhard Zumkeller, Sep 20 2014 CROSSREFS Cf. A000079, A000108, A014318, A201634. Sequence in context: A140069 A105851 A106195 * A051129 A319075 A264871 Adjacent sequences:  A247020 A247021 A247022 * A247024 A247025 A247026 KEYWORD nonn,tabl AUTHOR Philippe Deléham, Sep 13 2014 EXTENSIONS Data corrected by Reinhard Zumkeller, Sep 20 2014 STATUS approved

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Last modified February 23 07:03 EST 2019. Contains 320411 sequences. (Running on oeis4.)