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Search: id:A147781
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| A147781 |
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Odd/even binary expansion of summed, partitioned subsequent prime numbers. The sum of 8 subsequent prime numbers is multiplied, forming a new sum. The digits of each sum are added per digit, forming a new sum. The odd or even result is visualized by 0/1 |
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+0
3
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| 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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2+3+5+7+11+13+17+19 = 77 x 27 x 666 = 1384614 (1+3+8+4+6+1+4) = 27 (odd/0) 23+29+31+37+41+43+47+53 = 304 x 27 x 666 = 5466528 (5+4+6+6+5+2+8) = 36 (even/1) 461+463+467+479+487+491+499+503= 3850 x 27 x 666 = 69230700 (6+9+2+3+7) = 27 (odd/0) 509+521+523+541+547+557+563+569= 4330 x 27 x 666 = 77862060 (7+7+8+6+2+6) = 36 (even/1)
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CROSSREFS
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Sequence in context: A071030 A073445 A113217 this_sequence A082446 A144611 A130853
Adjacent sequences: A147778 A147779 A147780 this_sequence A147782 A147783 A147784
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KEYWORD
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easy,nonn
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AUTHOR
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E. J. Vening (permutate(AT)gmail.com), Nov 12 2008
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