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A067366
Numbers n such that 1+C(n,floor(n/2)) is prime, where C(n,floor(n/2)) = A001405(n) is a central binomial coefficient.
1
0, 1, 2, 4, 5, 8, 9, 11, 14, 24, 27, 37, 38, 44, 47, 76, 89, 92, 97, 123, 124, 136, 143, 144, 168, 243, 297, 332, 368, 393, 417, 428, 443, 680, 696, 697, 817, 890, 981, 1034, 1053, 1201, 1349, 1384, 1455, 1537, 1589, 1634, 1705, 2077, 2632, 2635, 2762, 3197
OFFSET
1,3
COMMENTS
The corresponding primes are in A066749.
MATHEMATICA
For[ n=0, True, n++, If[ PrimeQ[ Binomial[ n, Floor[ n/2 ] ]+1 ], Print[ n ] ] ]
CROSSREFS
Sequence in context: A080148 A241572 A032787 * A326774 A334265 A334266
KEYWORD
nonn
AUTHOR
Dean Hickerson, Jan 20 2002
STATUS
approved