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Search: id:A069322
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| A069322 |
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Square array read by antidiagonals of floor[(n+k)^(n+k)/(n^n*k^k)]. |
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+0
1
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| 1, 1, 1, 1, 4, 1, 1, 6, 6, 1, 1, 9, 16, 9, 1, 1, 12, 28, 28, 12, 1, 1, 14, 45, 64, 45, 14, 1, 1, 17, 65, 119, 119, 65, 17, 1, 1, 20, 89, 198, 256, 198, 89, 20, 1, 1, 23, 117, 307, 484, 484, 307, 117, 23, 1, 1, 25, 149, 449, 837, 1024, 837, 449, 149, 25, 1, 1, 28, 184, 629
(list; table; graph; listen)
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OFFSET
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0,5
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COMMENT
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T(n,k)*sqrt(3)/(n*k*pi) provides a rough approximation for A067059.
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EXAMPLE
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Rows start: 1,1,1,1,1,1,...; 1,4,6,9,12,14,...; 1,6,16,28,45,65,...; 1,9,28,64,119,198,...; etc. T(3,5)=floor[8^8/(3^3*5^5)]=floor[16777216 /84375]=floor[198.84...]=198.
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CROSSREFS
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Initial columns and rows are A000012 and A060644, main diagonal is A000302.
Sequence in context: A132046 A102413 A131399 this_sequence A075112 A046554 A010321
Adjacent sequences: A069319 A069320 A069321 this_sequence A069323 A069324 A069325
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KEYWORD
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nonn,tabl
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AUTHOR
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Henry Bottomley (se16(AT)btinternet.com), Mar 14 2002
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