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Search: id:A101820
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| A101820 |
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Triangle read by rows: T(n,h)/(n-1), where T is the array in A101819. |
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+0
2
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| 1, 1, 3, 1, 14, 12, 1, 45, 150, 60, 1, 124, 1080, 1560, 360, 1, 315, 6020, 21000, 16800, 2520, 1, 762, 28980, 204120, 378000, 191520, 20160, 1, 1785, 127050, 1631700, 5838840, 6667920, 2328480, 181440, 1, 4088, 522480, 11459280, 71442000
(list; table; graph; listen)
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OFFSET
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0,3
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FORMULA
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T(n, h) = C(n-1, h)*U(n, h)/(n-1), where U(n, h) is the array in A019538.
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EXAMPLE
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First rows:
1
1 3
1 14 12
4 45 150 60
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CROSSREFS
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Cf. A019538, A101817, A101819, A101821.
Sequence in context: A079640 A079638 A018858 this_sequence A055301 A141459 A080924
Adjacent sequences: A101817 A101818 A101819 this_sequence A101821 A101822 A101823
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KEYWORD
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nonn,tabl
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AUTHOR
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Clark Kimberling (ck6(AT)evansville.edu), Dec 17 2004
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