OFFSET
1,1
COMMENTS
All terms are multiples of 3.
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
FORMULA
t-/+2 are pair of consecutive primes.
EXAMPLE
15-/+2=(13,17), 21-/+2=(19,23), 45-/+2=(43,47) are pairs of consecutive primes.
MAPLE
select(t -> isprime(t-2) and isprime(t+2), [seq(i*(i+1)/2, i=1..1000)]); # Robert Israel, Oct 18 2020
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, May 14 2007
STATUS
approved