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 A074123 Group successively larger composite numbers so that the sum of the n-th group is a multiple of n. Sequence gives group sum divided by n for the n-th group. 3
 4, 3, 9, 3, 9, 3, 9, 3, 30, 33, 18, 65, 178, 46, 120, 225, 224, 175, 341, 175, 340, 121, 106, 39, 207, 251, 53, 307, 434, 291, 252, 649, 111, 1132, 372, 468, 54, 285, 541, 996, 115, 1446, 371, 1803, 424, 200, 526, 185, 488, 243, 149, 190, 55, 224, 486, 188, 170 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS FORMULA A074120(n)/n. EXAMPLE (4), (6), (8, 9, 10), (12), (14, 15, 16), (18), (20, 21, 22), (24), (25, 26, 27, 28, 30, 32, 33, 34, 35), (36, 38, 39, 40, 42, 44, 45, 46), (48, 49, 50, 51), ... MATHEMATICA NextComposite[n_] := Block[{k = n + 1}, While[PrimeQ[k], k++ ]; k]; CROSSREFS Cf. A002808, A074131, A074120, A074121, A074122. Sequence in context: A236099 A155536 A232814 * A016704 A131896 A114380 Adjacent sequences:  A074120 A074121 A074122 * A074124 A074125 A074126 KEYWORD nonn AUTHOR Amarnath Murthy, Aug 27 2002 EXTENSIONS Edited, corrected and extended by Robert G. Wilson v, Aug 29 2002 STATUS approved

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Last modified April 8 14:29 EDT 2020. Contains 333314 sequences. (Running on oeis4.)