A146319 Squarefree semiprimes n such that n+1 is not squarefree and n+2 is prime.

15, 35, 39, 51, 87, 95, 111, 155, 161, 249, 267, 291, 305, 335, 371, 377, 395, 407, 447, 485, 489, 519, 591, 611, 629, 671, 699, 707, 731, 737, 749, 755, 767, 771, 807, 851, 879, 917, 939, 951, 989, 995, 1007, 1011, 1047, 1059, 1067, 1115, 1149, 1169, 1191, 1199, 1211, 1227, 1247, 1299, 1371, 1379, 1457, 1469, 1529, 1565, 1655, 1691, 1707, 1731, 1739, 1745, 1751, 1781, 1799, 1991

Offset

1,1

Links

Table of n, a(n) for n=1..72.

Formula

(A006881 INTERSECT A040976) INTERSECT A005117

Crossrefs

Sequence in context: A327934 A202237 A080774 * A238605 A233561 A114988

Adjacent sequences: A146316 A146317 A146318 * A146320 A146321 A146322

Keyword

easy,nonn

Author

Giovanni Teofilatto, Oct 30 2008

Extensions

Definition corrected and more terms supplied by R. J. Mathar, Nov 02 2008

Status

approved