Number of 0..n arrays x(0..6) of 7 elements without any two consecutive increases or two consecutive decreases.

A200842

Number of 0..n arrays x(0..6) of 7 elements without any two consecutive increases or two consecutive decreases.

Terms

    a(0) =128a(1) =1465a(2) =8210a(3) =31677a(4) =96690a(5) =250913a(6) =577660a(7) =1212729a(8) =2365804a(9) =4346969a(10) =7598878a(11) =12735125a(12) =20585358a(13) =32247681a(14) =49148888a(15) =73113073a(16) =106439160a(17) =151987897a(18) =213278858a(19) =294597997a(20) =401116298a(21) =539020065a(22) =715653396a(23) =939673385a(24) =1221218596

External references