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A077555
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Product of terms of n-th row of A077553.
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4
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4, 24, 216, 2160, 32400, 810000, 9525600, 238140000, 8334900000, 408410100000, 6051137400000, 296505732600000, 16307815293000000, 1255701777561000000, 151939915084881000000, 1074848105961630000000, 82763304159045510000000
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OFFSET
| 0,1
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COMMENTS
| If there are two sets of distinct composite numbers satisfying the above condition then the set with lesser product is chosen irrespective of the number of prime divisors. Perhaps the ambiguity may not arise. E.g. Row 6 is 4,6,9,10,15,25. This row can not be extended to get the next row without bringing in another prime because every number divisible by 2,3 or 5 will be a multiple of one of the previous terms. Hence in row 7, prime 7 has to be brought in and then we get a new set of numbers 4,6,9,10,14,15,21.
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CROSSREFS
| Cf. A001358, A077553, A077554, A087112, A005843.
Sequence in context: A010039 A162314 A112141 * A166881 A183279 A145237
Adjacent sequences: A077552 A077553 A077554 * A077556 A077557 A077558
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KEYWORD
| nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 10 2002
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EXTENSIONS
| More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Aug 21 2003
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