Number of n X 7 0..1 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
A280439
Number of n X 7 0..1 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =20a(1) =120a(2) =236a(3) =386a(4) =574a(5) =834a(6) =1211a(7) =1784a(8) =2684a(9) =4128a(10) =6478a(11) =10334a(12) =16693a(13) =27208a(14) =44620a(15) =73470a(16) =121278a(17) =200490a(18) =331695a(19) =548936a(20) =908476a(21) =1503260a(22) =2486766a(23) =4112326a(24) =6797929a(25) =11232984a(26) =18554156a(27) =30634874a(28) =50561854a(29) =83419218
External references
- oeis: A280439