Number of permutations avoiding 3142, 25314, 246135 and 362514.

A120346

Number of permutations avoiding 3142, 25314, 246135 and 362514.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =23a(4) =102a(5) =492a(6) =2498a(7) =13130a(8) =70800a(9) =389446a(10) =2176802a(11) =12328552a(12) =70597568a(13) =408061604a(14) =2377643974a(15) =13950607135a(16) =82355028006a(17) =488797440712

External references