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A113463
Triangle read by rows: n-th row is the smallest set of n numbers in arithmetic progression with the distinct prime signatures.
2
1, 1, 2, 2, 4, 6, 2, 4, 6, 8, 8, 9, 10, 11, 12, 23, 24, 25, 26, 27, 28, 24, 25, 26, 27, 28, 29, 30, 103, 114, 125, 136, 147, 158, 169, 180, 304, 330, 356, 382, 408, 434, 460, 486, 512, 324, 368, 412, 456, 500, 544, 588, 632, 676, 720, 8, 172, 336, 500, 664, 828, 992, 1156
OFFSET
1,3
COMMENTS
In this sequence "smallest" means that the last term of the arithmetic progression is minimized, with ties broken by minimizing the first term (or equivalently, by maximizing the common difference).
CROSSREFS
KEYWORD
nonn,tabl,less
AUTHOR
David Wasserman, Jan 08 2006
STATUS
approved