Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.
A306125
Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =5a(1) =17a(2) =19a(3) =70a(4) =134a(5) =360a(6) =964a(7) =2805a(8) =8207a(9) =24747a(10) =77226a(11) =241685a(12) =759584a(13) =2416011a(14) =7719948a(15) =24722213a(16) =79338163a(17) =255258059a(18) =822455126a(19) =2651969050a(20) =8558214320a(21) =27638113884a(22) =89293362591a(23) =288580383107a(24) =932903497169
External references
- oeis: A306125