|
Search: id:A113244
|
|
|
| A113244 |
|
Prime differences of tetranacci numbers. |
|
+0
5
|
|
| 2, 3, 7, 11, 13, 41, 79, 107, 179, 193, 293, 397, 769, 1489, 2099, 2843, 2857, 5507, 5521, 9181, 10463, 10663, 10667, 19079, 39619, 76423, 126743, 146539, 147283, 147311, 283949, 547229, 771073, 3919171, 3919543, 3919943, 7555879, 7555927
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
A113188-A113194 deal with difference sets of Fibonacci numbers and Lucas numbers, and primes in those difference sets. A113238-A113239 deal with the difference set of tribonacci numbers and primes in that difference set.
|
|
FORMULA
|
{a(n)} = intersection of A000040 and A113243. {a(n)} = primes in the difference set of tetranacci sequence A000078, excluding prime tetranacci numbers A104535.
|
|
EXAMPLE
|
a(1) = 2 because 4 - 2 = 2 where 4 and 2 are tetranacci numbers.
a(2) = 3 because 4 - 1 = 3 where 4 and 1 are tetranacci numbers.
a(3) = 7 because 8 - 1 = 7 where 8 and 1 are tetranacci numbers.
a(4) = 11 because 15 - 4 = 11 where 15 and 4 are tetranacci numbers.
a(5) = 13 because 15 - 2 = 13 where 15 and 2 are tetranacci numbers.
|
|
CROSSREFS
|
Cf. A000040, A000078, A113188-A113194, A113238, A113239, A113243.
Sequence in context: A038963 A117112 A038895 this_sequence A040152 A034934 A092353
Adjacent sequences: A113241 A113242 A113243 this_sequence A113245 A113246 A113247
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
Jonathan Vos Post (jvospost2(AT)yahoo.com), Oct 19 2005; corrected Oct 20 2005
|
|
|
Search completed in 0.002 seconds
|
