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A246279
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Transpose of array A246278: A(row,1) = 2*row, and for col > 1, A(row,col) = A003961(A(row,col-1)).
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7
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2, 3, 4, 5, 9, 6, 7, 25, 15, 8, 11, 49, 35, 27, 10, 13, 121, 77, 125, 21, 12, 17, 169, 143, 343, 55, 45, 14, 19, 289, 221, 1331, 91, 175, 33, 16, 23, 361, 323, 2197, 187, 539, 65, 81, 18, 29, 529, 437, 4913, 247, 1573, 119, 625, 75, 20, 31, 841, 667, 6859, 391, 2873, 209, 2401, 245, 63, 22
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OFFSET
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1,1
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COMMENTS
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Permutation of natural numbers larger than 1.
See comments in A246278 (the same array transposed).
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LINKS
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FORMULA
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If col = 1, A(row,col) = 2*row, otherwise A(row,col) = A003961(A(row,col-1)).
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EXAMPLE
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The top-left corner of the array:
2, 3, 5, 7, 11, 13, 17, 19, 23, ...
4, 9, 25, 49, 121, 169, 289, 361, 529, ...
6, 15, 35, 77, 143, 221, 323, 437, 667, ...
8, 27, 125, 343, 1331, 2197, 4913, 6859, 12167, ...
10, 21, 55, 91, 187, 247, 391, 551, 713, ...
12, 45, 175, 539, 1573, 2873, 5491, 8303, 15341, ......
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PROG
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(Scheme)
(define (A246278bi row col) (if (= 1 row) (* 2 col) (A003961 (A246278bi (- row 1) col))))
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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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