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Search: id:A098012
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| A098012 |
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Triangle read by rows in which the k-th term in row n (n >= 1, k = 1..n) is Product_{i=0..k-1} prime(n-i). |
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+0
1
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| 2, 3, 6, 5, 15, 30, 7, 35, 105, 210, 11, 77, 385, 1155, 2310, 13, 143, 1001, 5005, 15015, 30030, 17, 221, 2431, 17017, 85085, 255255, 510510, 19, 323, 4199, 46189, 323323, 1616615, 4849845, 9699690, 23, 437, 7429, 96577, 1062347, 7436429, 37182145
(list; table; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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2
3 3*2
5 5*3 5*3*2
7 7*5 7*5*3 7*5*3*2
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MATHEMATICA
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Flatten[ Table[ Product[ Prime[i], {i, n, j, -1}], {n, 9}, {j, n, 1, -1}]] (from Robert G. Wilson v Sep 21 2004)
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CROSSREFS
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Cf. A000040, A002110, A006094, A046301, A046302, A046303.
Sequence in context: A071257 A067392 A066449 this_sequence A066117 A156833 A124655
Adjacent sequences: A098009 A098010 A098011 this_sequence A098013 A098014 A098015
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KEYWORD
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easy,nonn,tabl
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AUTHOR
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Alford Arnold (Alford1940(AT)aol.com), Sep 09 2004
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 21 2004
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