A141102 a(n) = prime(2^n) - n^2.

2, 3, 10, 37, 106, 275, 670, 1555, 3590, 8061, 17742, 38729, 83848, 180307, 385868, 821385, 1742248, 3680807, 7753716, 16289647, 34135588, 71378085, 148947610, 310247665

Offset

1,1

Links

Table of n, a(n) for n=1..24.

Example

a(1) = prime(2^1) - 1^2 = prime(2) - 1 = 3 - 1 = 2;
a(4) = prime(2^4) - 4^2 = prime(16) - 16 = 53 - 16 = 37.

Maple

seq(ithprime(2^n)-n^2, n=1..24); # Emeric Deutsch, Aug 07 2008

Crossrefs

Cf. A033844 (prime(2^n)).

Sequence in context: A060604 A075890 A296269 * A144720 A164933 A003048

Adjacent sequences: A141099 A141100 A141101 * A141103 A141104 A141105

Keyword

nonn

Author

Juri-Stepan Gerasimov, Jul 31 2008

Extensions

Corrected and extended by Emeric Deutsch, Aug 07 2008

Status

approved