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A214603
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Location of the first gap of exactly n in Ulam numbers, or zero if none is known. The zero terms are conjectural.
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4
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1, 4, 8, 53, 48, 0, 62, 18, 38, 87, 0, 114, 260, 0, 221, 0, 568, 0, 627, 155, 0, 646, 0, 1724, 695, 0, 282, 0, 1433, 751, 0, 36460, 0, 949, 483379914, 0, 8018, 0, 1257, 0, 1553, 1858, 0, 4057, 0, 9262, 3825, 0, 10606, 0, 115835, 3153, 0, 0, 0, 6982
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OFFSET
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1,2
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COMMENTS
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Some terms are not believed to exist. However, the first gap of 35 occurs at 483379914 and the first gap of 88 occurs at 1127544124. - Jud McCranie, Jul 31 2012
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LINKS
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EXAMPLE
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The first gap of 5 in Ulam numbers occurs after 48, so a(5) = 48.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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