Number of nX7 0..1 arrays with every element equal to 0, 1 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302162
Number of nX7 0..1 arrays with every element equal to 0, 1 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =21a(1) =185a(2) =56a(3) =206a(4) =603a(5) =1247a(6) =2853a(7) =6870a(8) =15489a(9) =35924a(10) =84962a(11) =195967a(12) =453837a(13) =1061993a(14) =2464882a(15) =5719363a(16) =13329296a(17) =30988342a(18) =71989905a(19) =167525699a(20) =389592291a(21) =905597726a(22) =2106327411a(23) =4898465680a(24) =11389209332a(25) =26486000403a(26) =61593726193
External references
- oeis: A302162