A139219 Primes of the form 41+(n+n^2)/2=41+A000217(n).

41, 47, 107, 251, 317, 419, 569, 821, 1031, 1217, 1367, 1637, 1811, 1871, 3527, 5501, 5927, 6257, 6827, 8297, 8819, 9221, 10337, 14747, 17807, 20747, 21569, 22619, 25919, 28961, 31667, 34757, 37991, 43997, 45191, 48869, 49811, 52691, 63587

Offset

1,1

Comments

Corresponding values of n in A139220.

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Mathematica

Select[Table[41+(n+n^2)/2, {n, 0, 800}], PrimeQ]

Prog

(Magma) [a: n in [0..500] | IsPrime(a) where a is  41 +(n + n^2) div 2]; // Vincenzo Librandi, Mar 22 2013

Crossrefs

Cf. A000217, A056561, A139220, A139221.

Sequence in context: A039328 A043151 A043931 * A185658 A074485 A039383

Adjacent sequences: A139216 A139217 A139218 * A139220 A139221 A139222

Keyword

nonn,easy

Author

Zak Seidov, Apr 11 2008

Status

approved