|
Search: id:A103839
|
|
|
| A103839 |
|
Number of permutations of (1,2,3,...,n) where each of the (n-1) adjacent pairs of elements sums to a prime. |
|
+0
2
|
|
| 1, 2, 2, 8, 4, 16, 24, 60, 140, 1328, 2144, 17536, 23296, 74216, 191544, 2119632, 4094976, 24223424, 45604056, 241559918, 675603568, 8723487720, 22850057800, 285146572432
(list; graph; listen)
|
|
|
Search completed in 0.001 seconds
|
