A011974 2 followed by the numbers that are the sum of 2 successive primes.

2, 5, 8, 12, 18, 24, 30, 36, 42, 52, 60, 68, 78, 84, 90, 100, 112, 120, 128, 138, 144, 152, 162, 172, 186, 198, 204, 210, 216, 222, 240, 258, 268, 276, 288, 300, 308, 320, 330, 340, 352, 360, 372, 384, 390, 396, 410, 434, 450, 456, 462, 472, 480, 492, 508, 520

Offset

1,1

Comments

All the terms in the sequence, except for a(2), are even. - K. D. Bajpai, Aug 26 2014

References

Archimedeans Problems Drive, Eureka, 26 (1963), 12.

Links

K. D. Bajpai, Table of n, a(n) for n = 1..10000

Formula

Essentially same as A001043.

Example

From K. D. Bajpai, Aug 26 2014: (Start)
a(6) = 24 is in the sequence because prime(5) + prime(6) = 11 + 13 = 24.
a(8) = 36 is in the sequence because prime(7) + prime(8) = 17 + 19 = 36.
(End)

Mathematica

Join[{2}, Total/@Partition[Prime[Range[40]], 2, 1]] (* Harvey P. Dale, May 04 2013 *)

Crossrefs

Cf. A000040.

Sequence in context: A022942 A183861 A024534 * A372231 A049633 A066614

Adjacent sequences: A011971 A011972 A011973 * A011975 A011976 A011977

Keyword

nonn,easy

Author

N. J. A. Sloane

Extensions

The terms a(40) to a(56) from K. D. Bajpai, Aug 26 2014

Status

approved