Number of nX5 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

A281397

Number of nX5 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

Terms

    a(0) =0a(1) =170a(2) =689a(3) =2146a(4) =5892a(5) =13446a(6) =30959a(7) =73600a(8) =169161a(9) =384546a(10) =874926a(11) =1975442a(12) =4434817a(13) =9919920a(14) =22098196a(15) =49065818a(16) =108622142a(17) =239782662a(18) =528047528a(19) =1160306466a(20) =2544313452a(21) =5568815362a(22) =12167899747a(23) =26544765678a(24) =57823995949

External references