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A131895
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Row sums of triangle A131894.
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1
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1, 9, 22, 40, 63, 91, 124, 162, 205, 253, 306, 364, 427, 495, 568, 646, 729, 817, 910, 1008, 1111, 1219, 1332, 1450, 1573, 1701, 1834, 1972, 2115, 2263, 2416, 2574, 2737, 2905, 3078, 3256, 3439, 3627, 3820, 4018, 4221, 4429, 4642, 4860, 5083, 5311, 5544
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| Binomial transform of (1, 8, 5, 0, 0, 0,...).
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EXAMPLE
| a(2) = 22 = sum of row 2 terms of triangle A131894: (11 + 6 + 5).
a(2) = 22 = (1, 2, 1) dot (1, 8, 5) = (1 + 16 + 5).
a(n)=a(n-1)+5*n+3 (with a(0)=1) [From Vincenzo Librandi, Nov 23 2010]
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MATHEMATICA
| a[n_]:=Sum[5*i-7, {i, 1, n}]; [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Dec 04 2008]
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CROSSREFS
| Cf. A131894.
Sequence in context: A154528 A130861 A049730 * A197498 A113519 A123833
Adjacent sequences: A131892 A131893 A131894 * A131896 A131897 A131898
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KEYWORD
| nonn
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 24 2007
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EXTENSIONS
| More terms and Mathematica program from Vladimir Orlovsky (4vladimir(AT)gmail.com), Dec 04 2008
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