A067241 Numbers n such that gcd((2n)!+1, n!+1) > 1.

3, 5, 8, 9, 21, 23, 33, 39, 51, 63, 65, 81, 89, 95, 99, 113, 131, 173, 183, 191, 209, 215, 221, 239, 245, 251, 261, 281, 285, 299, 303, 309, 315, 341, 345, 363, 369, 371, 393, 411, 419, 431, 443, 473, 495, 509, 525, 543, 545, 561, 575, 593, 645, 659, 683, 711

Offset

1,1

Links

Table of n, a(n) for n=1..56.

Crossrefs

Sequence in context: A349679 A355761 A306948 * A360030 A120943 A087792

Adjacent sequences: A067238 A067239 A067240 * A067242 A067243 A067244

Keyword

easy,nonn

Author

Benoit Cloitre, Feb 20 2002

Status

approved