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 A127715 Rightmost border of triangle A127714: a(n) = A127714(n, (n+1)*(n+2)/2 - 1). 10
 1, 1, 3, 14, 86, 645, 5662, 56632, 633545, 7820115, 105401961, 1538517351, 24157841308, 405778641302, 7256711524298, 137607733327779, 2757147167433326, 58188668578629283, 1289965088962987961 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Paul D. Hanna, Table of n, a(n), n = 0..100. FORMULA From Gary W. Adamson, Aug 02 2011: (Start) a(n) = upper left term of M^n, M is an infinite square production matrix in which nonzero terms = A033184 with the first "1" deleted, as follows: M = 1, 1, 0, 0, 0, 0, ... 2, 2, 1, 0, 0, 0, ... 5, 5, 3, 1, 0, 0, ... 14, 14, 9, 4, 1, 0, ... 42, 42, 28, 14, 5, 1, ... ... (End) EXAMPLE a(3) = 14 = the upper left term of M^3. CROSSREFS Cf. A127714, A127716, A033184 Sequence in context: A308940 A276313 A074520 * A307440 A087912 A308878 Adjacent sequences: A127712 A127713 A127714 * A127716 A127717 A127718 KEYWORD nonn AUTHOR Paul D. Hanna, Jan 24 2007 STATUS approved

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Last modified May 29 11:01 EDT 2023. Contains 363029 sequences. (Running on oeis4.)