Number of -4..4 arrays of n elements with first and second differences also in -4..4.

A201084

Number of -4..4 arrays of n elements with first and second differences also in -4..4.

Terms

    a(0) =9a(1) =61a(2) =323a(3) =1759a(4) =9593a(5) =52401a(6) =286207a(7) =1563111a(8) =8536807a(9) =46623423a(10) =254632457a(11) =1390667451a(12) =7595086541a(13) =41480325457a(14) =226543492197

External references