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Search: id:A055618
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| A055618 |
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a(n) = A*10^(4*n-1)+B with A=990*(10^(4*n)-1)/9999 and B=990000*(10^(4*n-4)-1)/9999+100. |
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+0
2
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| 990100, 99009900990100, 9900990099009900990100, 990099009900990099009900990100, 99009900990099009900990099009900990100, 990099009900990099009900990099009900990, 990099009900990099009900990099009900990099009900990100
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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a(2) = (990*(10^8-1)/9999)*10^7+990000*(10^4-1)/9999+100 = 99009900990100 = 9900990^2+0990100^2
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MAPLE
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for n from 1 to 15 do printf(`%d, `, (990*(10^(4*n)-1)/9999)*10^(4*n-1)+990000*(10^(4*n-4)-1)/9999+100 ) od:
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CROSSREFS
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Subset of A055616.
Sequence in context: A083395 A106782 A055617 this_sequence A033426 A017178 A017274
Adjacent sequences: A055615 A055616 A055617 this_sequence A055619 A055620 A055621
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KEYWORD
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nonn,base,easy
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AUTHOR
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Ulrich Schimke (ulrschimke(AT)aol.com)
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EXTENSIONS
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One more term from James A. Sellers (sellersj(AT)math.psu.edu), Sep 28 2001
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