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A138610 Non-squarefree numbers congruent to 3 mod 4. 0
27, 63, 75, 99, 135, 147, 171, 175, 207, 243, 275, 279, 315, 343, 351, 363, 375, 387, 423, 459, 475, 495, 507, 531, 539, 567, 575, 603, 639, 675, 711, 735, 747, 775, 783, 819, 847, 855, 867, 875, 891, 927, 931, 963, 975, 999, 1035, 1071, 1075, 1083, 1107 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Or, terms in A004767 but not in A039957.

FORMULA

A013929 INTERSECT A004767.

MATHEMATICA

<<NumberTheory`NumberTheoryFunctions` Select[Range[3, 2000, 4], SquareFreeQ[ # ]==False&]

PROG

(MAGMA) [4*n+3: n in [0..280] | not IsSquarefree(4*n+3)];  // Bruno Berselli, Mar 04 2011

CROSSREFS

Cf. A004767, A039957.

Sequence in context: A157500 A180574 A107580 * A128530 A044129 A044510

Adjacent sequences:  A138607 A138608 A138609 * A138611 A138612 A138613

KEYWORD

nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), May 14 2008

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Last modified February 17 10:05 EST 2012. Contains 206009 sequences.