A134924 Nearest-neighbors of isolated primes.

1, 3, 22, 24, 36, 38, 46, 48, 52, 54, 66, 68, 78, 80, 82, 84, 88, 90, 96, 98, 112, 114, 126, 128, 130, 132, 156, 158, 162, 164, 166, 168, 172, 174, 210, 212, 222, 224, 232, 234, 250, 252, 256, 258, 262, 264, 276, 278, 292, 294, 306, 308

Offset: 1

Author

Omar E. Pol, Nov 27 2007

Keywords

• easy
• nonn

Links

• Martin Burtscher, Igor Szczyrba, and Rafał Szczyrba, Analytic Representations of the n-anacci Constants and Generalizations Thereof, Journal of Integer Sequences, Vol. 18 (2015), Article 15.4.5.

Crossrefs

Cf. A007510, A045718, A134926, A134930.

Programs

Mathematica

ip=Select[Prime[Range[65]],NoneTrue[{#-2,#+2},PrimeQ]&];Union[Flatten[Table[n+{1, -1}, {n, ip}]]] (* James C. McMahon, Apr 12 2025 *)