A051771 Values of k such that there exists a binomial coefficient C(n,k) where C(n,k)-1 and C(n,k)+1 are twin primes and 2<=k<=floor(n/2).

2, 5, 26, 13, 35, 44, 37, 23, 78, 46, 34, 69, 44, 106, 41, 50, 90, 89, 132, 107, 137, 143, 184, 145, 133, 166, 181, 82, 158, 198, 157, 175, 183, 163, 317, 293, 140, 123, 317, 251, 218, 169, 170, 103, 327, 229, 329, 73, 190, 79, 51, 95, 79, 290, 395, 432, 126

Offset

0,1

Comments

This sequence is ordered by the size of the corresponding value of n.

Links

Table of n, a(n) for n=0..56.

Source

Example

The integer 5 is a member of the sequence because C(11,5)=462 and 461 and 463 are twin primes.

Crossrefs

A051735, A051770.

Sequence in context: A356674 A370555 A120767 * A008318 A365324 A204275

Adjacent sequences: A051768 A051769 A051770 * A051772 A051773 A051774

Keyword

nonn

Author

Joe DeMaio (jdemaio(AT)kennesaw.edu), Dec 08 1999

Status

approved