Number of (n+2)X8 binary matrices with every 3X3 block having exactly four 1's.

A181260

Number of (n+2)X8 binary matrices with every 3X3 block having exactly four 1's.

Terms

    a(0) =21024a(1) =27554a(2) =36244a(3) =48846a(4) =79324a(5) =133850a(6) =242784a(7) =526226a(8) =1196428a(9) =2877078a(10) =7542964a(11) =20219426a(12) =55452024a(13) =157207034a(14) =449767204a(15) =1298801406a(16) =3801296524a(17) =11170281290a(18) =32957815824a(19) =97800035426a(20) =290736856828a(21) =865851794598

External references