Number of nX2 1..3 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order.
A166776
Number of nX2 1..3 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order.
Terms
- a(0) =0a(1) =12a(2) =51a(3) =135a(4) =286a(5) =530a(6) =897a(7) =1421a(8) =2140a(9) =3096a(10) =4335a(11) =5907a(12) =7866a(13) =10270a(14) =13181a(15) =16665a(16) =20792a(17) =25636a(18) =31275a(19) =37791a(20) =45270a(21) =53802a(22) =63481a(23) =74405a(24) =86676a(25) =100400a(26) =115687a(27) =132651a(28) =151410a(29) =172086
External references
- oeis: A166776