A084572 Let a(1)=1; for n>1, a(n)=nextprime((Pi/2)*a(n-1)).

1, 2, 5, 11, 19, 31, 53, 89, 149, 239, 379, 599, 941, 1481, 2333, 3671, 5779, 9091, 14281, 22433, 35251, 55373, 86981, 136649, 214651, 337189, 529657, 832003, 1306913, 2052899, 3224687, 5065351, 7956661, 12498313, 19632329, 30838393

Offset

1,2

Links

Table of n, a(n) for n=1..36.

Prog

(PARI) a(n)=if(n<2, 1, nextprime((Pi/2)*a(n-1))); for(n=1, 50, print1(a(n), ", "))

Crossrefs

Cf. A084571.

Sequence in context: A024979 A019341 A327265 * A040105 A319859 A156768

Adjacent sequences: A084569 A084570 A084571 * A084573 A084574 A084575

Keyword

nonn

Author

Paul D. Hanna, May 30 2003

Status

approved