A345071 Sums of two consecutive odd-indexed primes.

7, 16, 28, 40, 54, 72, 88, 106, 126, 140, 156, 180, 200, 212, 236, 264, 286, 306, 324, 346, 370, 388, 408, 438, 460, 474, 498, 526, 546, 560, 590, 620, 644, 678, 700, 720, 746, 768, 790, 820, 850, 870, 888, 910, 928, 954, 986, 1008, 1032, 1070, 1110, 1134, 1158, 1186, 1206

Offset

1,1

Links

Table of n, a(n) for n=1..55.

Formula

a(n) = prime(2*n-1) + prime(2*n+1).

Example

16 is the sum of 5 and 11, which are the 3rd and 5th prime numbers.

Mathematica

Table[Prime[2 n - 1] + Prime[2 n + 1], {n, 80}]

Crossrefs

Cf. A000040, A031368, A345070.

Sequence in context: A326664 A028560 A190530 * A351044 A133694 A024627

Adjacent sequences: A345068 A345069 A345070 * A345072 A345073 A345074

Keyword

nonn

Author

Wesley Ivan Hurt, Jun 06 2021

Status

approved