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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

The corresponding primes are in A066749.

LINKS

Table of n, a(n) for n=1..54.

MATHEMATICA

For[ n=0, True, n++, If[ PrimeQ[ Binomial[ n, Floor[ n/2 ] ]+1 ], Print[ n ] ] ]

CROSSREFS

Cf. A001405, A066749.

Sequence in context: A080148 A241572 A032787 * A211967 A099628 A286805

Adjacent sequences:  A067363 A067364 A067365 * A067367 A067368 A067369

KEYWORD

nonn

AUTHOR

Dean Hickerson, Jan 20 2002

STATUS

approved

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Last modified April 23 06:08 EDT 2019. Contains 322381 sequences. (Running on oeis4.)