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A056203
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Triangle of numbers related to congruum problem: T(n,k)=n^2+2nk-k^2 with n>k>0, starting at T(2,1)=7.
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2
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7, 14, 17, 23, 28, 31, 34, 41, 46, 49, 47, 56, 63, 68, 71, 62, 73, 82, 89, 94, 97, 79, 92, 103, 112, 119, 124, 127, 98, 113, 126, 137, 146, 153, 158, 161, 119, 136, 151, 164, 175, 184, 191, 196, 199, 142, 161, 178, 193, 206, 217, 226, 233, 238, 241, 167, 188
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OFFSET
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1,1
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COMMENTS
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Refers to A057102, which had an incorrect description and has been replaced by A256418. As a result the present sequence should be re-checked. - N. J. A. Sloane, Apr 06 2015
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LINKS
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FORMULA
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EXAMPLE
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a(1) = T(2,1) = 2^2+2*2*1-1 = 7.
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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