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A080170
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Numbers n such that GCD(C(2*n,n), C(3*n,n), C(4*n,n) ..., C((n+1)*n,n) ) = 1.
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1
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29, 59, 69, 83, 89, 104, 119, 125, 131, 139, 153, 164, 167, 179, 181, 194, 197, 209, 219, 230, 233, 251, 259, 263, 272, 279, 285, 305, 307, 311, 314, 329, 335, 339, 356, 359, 363, 373, 379, 384, 389, 395, 398, 407, 417, 419, 428, 439, 441, 454, 455, 461
(list; graph; refs; listen; history; internal format)
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