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A084572
Let a(1)=1; for n>1, a(n)=nextprime((Pi/2)*a(n-1)).
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
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
KEYWORD
nonn
AUTHOR
Paul D. Hanna, May 30 2003
STATUS
approved