A255174 a(n) = prime(3*n) - prime(2*n).

2, 6, 10, 18, 18, 24, 30, 36, 42, 42, 58, 62, 66, 74, 84, 92, 94, 100, 106, 108, 126, 124, 148, 136, 150, 158, 168, 170, 178, 182, 194, 192, 206, 220, 222, 234, 234, 236, 246, 250, 256, 268, 284, 286, 298, 308, 320, 324, 332, 322, 326, 342, 360, 360, 376, 384

Offset

1,1

Comments

The sequence is not monotonic since, for instance, a(22) = 124 < 126 = a(21).

Links

Table of n, a(n) for n=1..56.

Mathematica

Table[Prime[3n]-Prime[2n], {n, 100}]

Prog

(Magma) [NthPrime(3*n) - NthPrime(2*n): n in [1..80]]; // Vincenzo Librandi, Feb 16 2015

Crossrefs

Cf. A072473.

Sequence in context: A180739 A274679 A229218 * A140777 A309502 A281664

Adjacent sequences: A255171 A255172 A255173 * A255175 A255176 A255177

Keyword

nonn

Author

Zak Seidov, Feb 15 2015

Extensions

More terms from Vincenzo Librandi, Feb 16 2015

Status

approved