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Search: id:A076026
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| A076026 |
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G.f.: (1-4*x*C)/(1-5*x*C) where C = (1/2-1/2*(1-4*x)^(1/2))/x = g.f. for Catalan numbers A000108. |
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9
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| 1, 1, 6, 37, 230, 1434, 8952, 55917, 349374, 2183230, 13643972, 85270626, 532926716, 3330739972, 20816939100, 130105200765, 813155081070, 5082210417270, 31763782696740, 198523522444950, 1240771573465140, 7754820693127020, 48467623215477120, 302922622226091090
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OFFSET
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0,3
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FORMULA
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a(n+1)=Sum_{k, 0<=k<=n}A039598(n,k)*4^k . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Mar 21 2007
a(n) = Sum_{k, 0<=k<=n}A039599(n,k)*A015521(k), for n>=1 . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Nov 22 2007
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CROSSREFS
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Cf. A000108, A001700, A049027, A076025.
Sequence in context: A022035 A005668 A018904 this_sequence A081570 A122898 A081912
Adjacent sequences: A076023 A076024 A076025 this_sequence A076027 A076028 A076029
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KEYWORD
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nonn
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AUTHOR
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njas, Oct 29 2002
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