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A096077
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a(0)=0 and for n>0, a(n) is the smallest positive integer that cannot be derived by the adding or subtracting at most three terms with values in {a(0),...,a(n-1)} allowing repeats.
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0
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0, 1, 4, 10, 17, 29, 52, 67, 89, 132, 164, 205, 259, 303, 350, 405, 505, 529, 588, 680, 903, 1016, 1061, 1248, 1358, 1445, 1838, 1878, 2086, 2117, 2195, 2613, 2840, 3060, 3314, 3422, 3816, 4097, 4247, 4565, 4705, 5326, 5511, 5777, 6104, 6247, 6796, 7073
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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COMMENTS
| Stated in more concrete terms, a(n) is the smallest amount of a transaction that cannot be achieved with the transfer (in either direction) of at most 3 coins with values among the previous terms.
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EXAMPLE
| a(4)=17 because: 11=10+1, 12=10+1+1, 13=10+4-1, 14=10+4, 15=10+4+1, 16=10+10-4, but there is no way to create 17 using at most three values in {1,4,10}
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CROSSREFS
| Sequence in context: A008022 A047699 A167209 * A008147 A108726 A079287
Adjacent sequences: A096074 A096075 A096076 * A096078 A096079 A096080
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KEYWORD
| nonn
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AUTHOR
| Andrew Weimholt (andrew(AT)weimholt.com), Jul 22 2004
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