Number of length n+2 0..2 arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero.
A250314
Number of length n+2 0..2 arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero.
Terms
- a(0) =5a(1) =25a(2) =41a(3) =161a(4) =487a(5) =1689a(6) =5849a(7) =19981a(8) =67459a(9) =221953a(10) =709677a(11) =2225181a(12) =6874957a(13) =21019457a(14) =63845081a(15) =193077349a(16) =582247055a(17) =1752693185a(18) =5269930487a(19) =15833493125a(20) =47548549519a(21) =142743601321a(22) =428431672069
External references
- oeis: A250314