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Search: id:A055877
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| A055877 |
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Least increasing sequence with a(1) = 1 and Hankel transform {1,1,1,1,...}. |
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+0
2
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| 1, 2, 5, 6, 42, 43, 18626, 18627, 5798368522871, 5798368522872, 194935493755610196550803104551677768964, 194935493755610196550803104551677768965
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OFFSET
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1,2
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COMMENT
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Hankel transform {t(n)} of {a(n)} is given by t(n) = Det[{a(1), a(2), ..., a(n)}, {a(2), a(3), ..., a(n+1)}, ..., {a(n), a(n+1), ..., a(2n-1)}].
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EXAMPLE
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Given that {a(n)} = {1,2,5,6,a(5),...}, a(5) is seen to be 42 since Det[{1,2,5},{2,5,6},{5,6,42}] = 1, whereas Det[{1,2,5},{2,5,6},{5,6,43}] = 2.
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CROSSREFS
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Sequence in context: A056441 A164805 A152918 this_sequence A111190 A009376 A025123
Adjacent sequences: A055874 A055875 A055876 this_sequence A055878 A055879 A055880
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KEYWORD
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nonn
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AUTHOR
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John W. Layman (layman(AT)math.vt.edu), Jul 14 2000
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