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A130069
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Primes by columns, interspersed with (k-1) zeros.
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2
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2, 3, 2, 5, 0, 2, 7, 3, 0, 2, 11, 0, 0, 0, 2, 13, 5, 3, 0, 0, 2, 17, 0, 0, 0, 0, 0, 2, 19, 7, 0, 3, 0, 0, 0, 23, 0, 5, 0, 0, 0, 0, 0, 2, 29, 11, 0, 0, 3, 0, 0, 0, 0, 2
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OFFSET
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1,1
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COMMENTS
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Left column = the primes, A000040; row sums = A007445, (2, 5, 7, 12, 13, 23,...), the inverse Moebius transform of the primes. A130070 = A130069 with non-zero terms reversed and mapped on A051731.
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LINKS
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Table of n, a(n) for n=1..54.
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FORMULA
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Primes by columns, interspersed with (k-1) zeros. Map the primes on the "1" terms of A051731, by columns; and rest zeros.
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EXAMPLE
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First few rows of the triangle are:
2;
3, 2;
5, 0, 2;
7, 3, 0, 2;
11, 0, 0, 0, 2;
13, 5, 3, 0, 0, 2;
17, 0, 0, 0, 0, 0, 2;
19, 7, 0, 3, 0, 0, 0, 2;
23, 0, 5, 0, 0, 0, 0, 0, 2;
29, 11, 0, 0, 3, 0, 0, 0, 0, 2;
...
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CROSSREFS
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Cf. A000040, A051731, A130070.
Sequence in context: A202714 A022662 A059051 * A120007 A092509 A214053
Adjacent sequences: A130066 A130067 A130068 * A130070 A130071 A130072
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KEYWORD
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nonn,tabl
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AUTHOR
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Gary W. Adamson, May 05 2007
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STATUS
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approved
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