Number of nonnegative integer arrays of length 2n+5 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value n+1.

A211850

Number of nonnegative integer arrays of length 2n+5 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value n+1.

Terms

    a(0) =63a(1) =147a(2) =286a(3) =494a(4) =785a(5) =1173a(6) =1672a(7) =2296a(8) =3059a(9) =3975a(10) =5058a(11) =6322a(12) =7781a(13) =9449a(14) =11340a(15) =13468a(16) =15847a(17) =18491a(18) =21414a(19) =24630a(20) =28153a(21) =31997a(22) =36176a(23) =40704a(24) =45595a(25) =50863a(26) =56522a(27) =62586a(28) =69069a(29) =75985

External references