A101176
Final terms of rows of triangle in A101174.
Original entry on oeis.org
2, 4, 6, 10, 16, 21, 28, 36, 48, 55, 66, 80, 91, 105, 121, 137, 153, 172, 190, 211, 231, 254, 278, 302, 328, 355, 383, 412, 443, 472, 505, 538, 573, 610, 647, 685, 723, 764, 803, 848, 892, 937, 981, 1030, 1077, 1117, 1177, 1229, 1281, 1337, 1389, 1442, 1502
Offset: 1
A101174
Triangle formed by grouping the natural numbers so that the n-th row contains n numbers whose product has exactly n prime divisors, minimizing (1) final term of row and (2) product of terms of row.
Original entry on oeis.org
2, 3, 4, 1, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 45, 48, 44, 46, 47, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72
Offset: 1
Triangle begins:
2
3,4
1,5,6
7,8,9,10
11,12,13,14,16
15,17,18,19,20,21
22,23,24,25,26,27,28
29,30,31,32,33,34,35,36
37,38,39,40,41,42,43,45,48
44,46,47,49,50,51,52,53,54,55
56,57,58,59,60,61,62,63,64,65,66
67,68,69,70,71,72,73,74,75,76,77,80
78,79,81,82,83,84,85,86,87,88,89,90,91
A101177
Product of terms in n-th row of triangle in A101174.
Original entry on oeis.org
2, 12, 30, 5040, 384384, 36628200, 5967561600, 1220096908800, 350804594649600, 97292707463952000, 42873948150095462400, 21336925409736330240000, 11640487097965528951948800, 7998487694738166709923840000
Offset: 1
A101178
Largest squarefree number that divides A101177(n).
Original entry on oeis.org
2, 6, 30, 210, 6006, 67830, 690690, 35303730, 3383531970, 29248649430, 1846079805570, 220495674290430, 15231748284963210, 328001307608664690, 58030069605260142390, 4938238739984380540710, 182365421703667931839110
Offset: 1
Original entry on oeis.org
1, 2, 1, 24, 64, 540, 8640, 34560, 103680, 3326400, 23224320, 96768000, 764225280, 24385536000, 108391219200, 1097349120000, 29847896064000, 347640201216000, 12239832084480000, 2008587829248000, 365022211276800000
Offset: 1
Showing 1-5 of 5 results.
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