Number of -7..7 arrays of n elements with first, second and third differences also in -7..7.
A202123
Number of -7..7 arrays of n elements with first, second and third differences also in -7..7.
Terms
- a(0) =15a(1) =169a(2) =1483a(3) =9739a(4) =65773a(5) =443169a(6) =2993875a(7) =20229855a(8) =136692527a(9) =923636217a(10) =6241166303a(11) =42172597643a(12) =284966475203
External references
- oeis: A202123