Number of Bottleneck-Monge matrices with 3 rows. In the formula below, P=3.

Terms

a(0) =8a(1) =33a(2) =117a(3) =384a(4) =1194a(5) =3558a(6) =10238a(7) =28606a(8) =77950a(9) =207870a(10) =543998a(11) =1400318a(12) =3552254a(13) =8894462a(14) =22011902a(15) =53903358a(16) =130744318a(17) =314376190a(18) =749928446a(19) =1775894526a(20) =4177264638a(21) =9764863998a(22) =22695378942a(23) =52466548734a(24) =120686903294a(25) =276320747518a(26) =629900574718