A071923 Prime such that pi{x^2,(x+1)^2+1}=pi{(x+1)^2,p}.

7, 13, 19, 37, 41, 67, 73, 101, 107, 149, 163, 193, 227, 239, 281, 337, 353, 397, 433, 479, 523, 577, 607, 677, 733, 769, 829, 907, 953, 1013, 1091, 1151, 1229, 1289, 1373, 1439, 1489, 1601, 1667, 1777, 1867, 1907, 2027, 2099, 2237, 2281, 2389, 2543, 2591

Offset

0,1

Links

Table of n, a(n) for n=0..48.

Example

a(1)=7 because pi(1,4)=2 and pi(4,7)=2

Prog

(PARI) pi(m, n)=local(i, pic); pic=0; forprime (i=m, n, pic++); pic; for (x=1, 500, xc=0; px=pi(x^2, (x+1)^2); forprime (y=(x+1)^2, 100000, xc++; if (xc==px, write1("primeSquared.txt", y, ", "); break)))

Crossrefs

Sequence in context: A208720 A208776 A108295 * A344045 A048646 A152087

Adjacent sequences: A071920 A071921 A071922 * A071924 A071925 A071926

Keyword

nonn

Author

Jon Perry, Jun 14 2002

Status

approved