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A289055
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Triangle read by rows: T(n,k) = (k+1)*A028815(n) for 0 <= k <= n.
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0
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2, 3, 6, 4, 8, 12, 6, 12, 18, 24, 8, 16, 24, 32, 40, 12, 24, 36, 48, 60, 72, 14, 28, 42, 56, 70, 84, 98, 18, 36, 54, 72, 90, 108, 126, 144, 20, 40, 60, 80, 100, 120, 140, 160, 180, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,1
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LINKS
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FORMULA
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EXAMPLE
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Triangle begins:
2;
3, 6;
4, 8, 12;
6, 12, 18, 24;
8, 16, 24, 32, 40;
12, 24, 36, 48, 60, 72;
14, 28, 42, 56, 70, 84, 98;
18, 36, 54, 72, 90, 108, 126, 144;
20, 40, 60, 80, 100, 120, 140, 160, 180;
...
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MATHEMATICA
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Join[{2}, t[n_, k_] := (k + 1) (Prime[n] + 1); Table[t[n, k], {n, 10}, {k, 0, n}] //Flatten]
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PROG
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(Magma) /* As triangle (here NthPrime(0)=1) */ [[(k+1)*(NthPrime(n)+1): k in [0..n]]: n in [0.. 15]];
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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