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A067241 Numbers n such that gcd((2n)!+1, n!+1) > 1. 0
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

CROSSREFS

Sequence in context: A032682 A022769 A306948 * A120943 A087792 A192881

Adjacent sequences:  A067238 A067239 A067240 * A067242 A067243 A067244

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre, Feb 20 2002

STATUS

approved

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Last modified January 18 19:43 EST 2020. Contains 331029 sequences. (Running on oeis4.)