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A130026
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Triangle (n,k) by columns, arithmetic sequences interspersed with k zeros.
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1
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1, 2, 1, 3, 0, 1, 4, 3, 0, 1, 5, 0, 0, 0, 1, 6, 5, 4, 0, 0, 1, 7, 0, 0, 0, 0, 0, 1, 8, 7, 0, 5, 0, 0, 0, 1, 9, 0, 7, 0, 0, 0, 0, 0, 1, 10, 9, 0, 0, 6, 0, 0, 0, 0, 1
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Row sums = A081307: (1, 3, 4, 8, 6, 16, 8, 21, 17,...).
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FORMULA
| Arithmetic sequences by columns, (1,2,3,...); (1,3,5,...); (1,4,7,...); interspersed with k zeros, k=0,1,2,...
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EXAMPLE
| First few rows of the triangle are:
1;
2, 1;
3, 0, 1;
4, 3, 0, 1;
5, 0, 0, 0, 1;
6, 5, 4, 0, 0, 1;
7, 0, 0, 0, 0, 0, 1;
...
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CROSSREFS
| Cf. A081307, A130027.
Sequence in context: A143239 A158951 A126988 * A113287 A096798 A158902
Adjacent sequences: A130023 A130024 A130025 * A130027 A130028 A130029
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KEYWORD
| nonn,tabl
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), May 02 2007
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