Number of nonnegative integer arrays of length 2n+7 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value n+1.
A211852
Number of nonnegative integer arrays of length 2n+7 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value n+1.
Terms
- a(0) =588a(1) =2013a(2) =5486a(3) =12713a(4) =26163a(5) =49210a(6) =86275a(7) =142968a(8) =226230a(9) =344475a(10) =507732a(11) =727787a(12) =1018325a(13) =1395072a(14) =1875937a(15) =2481154a(16) =3233424a(17) =4158057a(18) =5283114a(19) =6639549a(20) =8261351a(21) =10185686a(22) =12453039a(23) =15107356a(24) =18196186a(25) =21770823a(26) =25886448a(27) =30602271
External references
- oeis: A211852