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Search: id:A009998
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| A009998 |
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Triangle in which j-th entry in i-th row is (j+1)^(i-j). |
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+0
9
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| 1, 1, 1, 1, 2, 1, 1, 4, 3, 1, 1, 8, 9, 4, 1, 1, 16, 27, 16, 5, 1, 1, 32, 81, 64, 25, 6, 1, 1, 64, 243, 256, 125, 36, 7, 1, 1, 128, 729, 1024, 625, 216, 49, 8, 1, 1, 256, 2187, 4096, 3125, 1296, 343, 64, 9, 1, 1, 512, 6561, 16384, 15625, 7776, 2401, 512, 81, 10, 1
(list; table; graph; listen)
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OFFSET
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0,5
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REFERENCES
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M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, 1964 (and various reprintings), p. 24.
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LINKS
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T. D. Noe, Rows n=0..50 of triangle, flattened
M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards, Applied Math. Series 55, Tenth Printing, December 1972 [alternative scanned copy].
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EXAMPLE
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1; 1, 1; 1, 2, 1; 1, 4, 3, 1; 1, 8, 9, 4, 1; 1, 16, 27, 16, 5, 1; 1, 32, 81, 64, 25, 6, 1;...
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CROSSREFS
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Row sums give A026898. Cf. A088956.
Sequence in context: A055587 A137743 A099239 this_sequence A113993 A103323 A092056
Adjacent sequences: A009995 A009996 A009997 this_sequence A009999 A010000 A010001
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KEYWORD
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tabl,nonn,easy,nice
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AUTHOR
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njas
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EXTENSIONS
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a(62) corrected to 512 by T. D. Noe, Dec 20 2007
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