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A100479
a(n) = prime(2n-1) + prime(2n).
1
5, 12, 24, 36, 52, 68, 84, 100, 120, 138, 152, 172, 198, 210, 222, 258, 276, 300, 320, 340, 360, 384, 396, 434, 456, 472, 492, 520, 540, 558, 576, 618, 630, 668, 696, 712, 740, 762, 786, 810, 840, 864, 882, 906, 924, 946, 978, 1002, 1030, 1064, 1104, 1132
OFFSET
1,1
LINKS
FORMULA
a(n) = A001043(2n-1). - R. J. Mathar, Apr 20 2009
a(n) = A031368(n) + A031215(n). - G. C. Greubel, Apr 05 2023
MATHEMATICA
Total/@Partition[Prime[Range[110]], 2] (* Harvey P. Dale, Apr 20 2016 *)
PROG
(Magma) [(&+[NthPrime(2*n+j-1): j in [0..1]]): n in [1..70]]; // G. C. Greubel, Apr 05 2023
(SageMath) [sum(nth_prime(2*n+j-1) for j in range(2)) for n in range(1, 71)] # G. C. Greubel, Apr 05 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
Jun Mizuki (suzuki32(AT)sanken.osaka-u.ac.jp), Nov 22 2004
STATUS
approved