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A160793
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Natural numbers and the sum of first n primes interleaved.
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4
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1, 2, 2, 5, 3, 10, 4, 17, 5, 28, 6, 41, 7, 58, 8, 77, 9, 100, 10, 129, 11, 160, 12, 197, 13, 238, 14, 281, 15, 328, 16, 381, 17, 440, 18, 501, 19, 568, 20, 639, 21, 712, 22, 791, 23, 874, 24, 963, 25, 1060, 26, 1161, 27, 1264, 28, 1371, 29, 1480
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OFFSET
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1,2
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COMMENTS
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Also first differences of A160792: length of edges of a square spiral related to prime numbers A000040 whose vertices are the numbers A160792.
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LINKS
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FORMULA
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MATHEMATICA
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Module[{nn=30, sp}, sp=Accumulate[Prime[Range[nn]]]; Riffle[Range[nn], sp]] (* Harvey P. Dale, May 22 2018 *)
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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