Number of (n+2)X(1+2) 0..1 arrays with the (lower) medians of each row unequal to its neighbors and each column equal to its neighbors.
A238021
Number of (n+2)X(1+2) 0..1 arrays with the (lower) medians of each row unequal to its neighbors and each column equal to its neighbors.
Terms
- a(0) =20a(1) =146a(2) =260a(3) =1820a(4) =3752a(5) =24818a(6) =56612a(7) =355364a(8) =872600a(9) =5238356a(10) =13605608a(11) =78675128a(12) =213600848a(13) =1196862482a(14) =3368311460a(15) =18375903380a(16) =53276769080a(17) =284073991196a(18) =844510526840
External references
- oeis: A238021