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A074127
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Group the composite numbers so that the sum of the n-th group is a multiple of the n-th prime: (4), (6), (8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22), (24, 25), (26, 27, 28, 30, 32), (33, 34, ...), ... Sequence gives the group sum divided by n-th prime for the n-th group.
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3
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2, 2, 33, 7, 13, 74, 52, 83, 304, 109, 115, 52, 199, 438, 891, 44, 40, 47, 512, 2595, 971, 195, 106, 1208, 2229, 1355, 477, 290, 969, 6938, 393, 48, 3110, 4111, 4290, 2682, 3406, 1273, 3457, 3319, 4848, 1113, 922, 13530, 9047, 20368, 28315, 11673
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..48.
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PROG
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(PARI) c=3:for(n=1, 70, s=0:while((s==0||s%prime(n)>0), c=c+1: if(isprime(c), c=c+1):s=s+c):print1(s/prime(n)", "))
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CROSSREFS
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Cf. A074124, A074125, A074126.
Sequence in context: A127262 A121788 A018976 * A024176 A056612 A131658
Adjacent sequences: A074124 A074125 A074126 * A074128 A074129 A074130
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 27 2002
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EXTENSIONS
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Corrected and extended by Ralf Stephan, Mar 22 2003
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STATUS
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approved
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