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

Author

Zak Seidov, Apr 11 2008

Keywords

• nonn
• easy

Comments

Corresponding values of n in A139220.

Links

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

Crossrefs

Cf. A000217, A056561, A139220, A139221.

Programs

Magma

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

Mathematica

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