Number of (n+2) X 9 0..1 matrices with each 3 X 3 subblock having the same population.
A224650
Number of (n+2) X 9 0..1 matrices with each 3 X 3 subblock having the same population.
Terms
- a(0) =175616a(1) =209216a(2) =250304a(3) =303488a(4) =430208a(5) =630080a(6) =983168a(7) =1890368a(8) =3876992a(9) =8594432a(10) =21633920a(11) =56280896a(12) =151174016a(13) =425070656a(14) =1208783744a(15) =3475570688a(16) =10157902208a(17) =29817258560a(18) =87902960768a(19) =260802882368
External references
- oeis: A224650