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A030194
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Let S = triangular numbers; a(0)=0; a(n) = smallest m such that m - a(i) is not in S for any i < n.
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0
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0, 2, 4, 9, 11, 13, 18, 20, 22, 27, 29, 31, 51, 53, 60, 62, 69, 71, 85, 94, 101, 103, 110, 112, 141, 143, 150, 152, 159, 161, 168, 170, 211, 220, 229, 245, 267, 269, 292, 299, 301, 308, 310, 317, 319, 326, 348, 357, 359
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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REFERENCES
| Related papers: A. Sarkozy. On the difference sets of sequences of integers, Acta. Math. Acad. Sci. Hungar. 31(1978), no. 1-2, 125-149; no. 3-4, 355-386; Ann. Univ. Sci. Budapest. Eotvos Sect. Math. 21(1978), 45-53.
I. Z. Rusza. Difference sets without squares, Periodica Math. Hugarica 15(1984), 205-209.
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CROSSREFS
| Sequence in context: A096692 A203847 A172147 * A190494 A101255 A047348
Adjacent sequences: A030191 A030192 A030193 * A030195 A030196 A030197
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KEYWORD
| nonn
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AUTHOR
| Jan Kristian Haugland (jankrihau(AT)hotmail.com)
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