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 A160793 Natural numbers and the sum of first n primes interleaved. 4
 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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Also first differences of A160792: length of edges of a square spiral related to prime numbers A000040 whose vertices are the numbers A160792. A000027 and A007504 interleaved. - Omar E. Pol, Oct 31 2011 LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 FORMULA a(2n-1) = n, a(2n) = A007504(n). - Omar E. Pol, Oct 31 2011 MATHEMATICA Module[{nn=30, sp}, sp=Accumulate[Prime[Range[nn]]]; Riffle[Range[nn], sp]] (* Harvey P. Dale, May 22 2018 *) CROSSREFS Cf. A000040, A160790, A160791, A160792. Sequence in context: A163298 A133440 A331520 * A327754 A308096 A006800 Adjacent sequences:  A160790 A160791 A160792 * A160794 A160795 A160796 KEYWORD easy,nonn AUTHOR Omar E. Pol, May 29 2009 EXTENSIONS More terms from Sean A. Irvine, Oct 31 2011 New definition from Omar E. Pol, Oct 31 2011 STATUS approved

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Last modified May 31 16:29 EDT 2020. Contains 334748 sequences. (Running on oeis4.)