Saturated two-layer networks on n channels.

Terms

a(0) =1a(1) =2a(2) =4a(3) =10a(4) =28a(5) =70a(6) =230a(7) =676a(8) =2456a(9) =7916a(10) =31374a(11) =109856a(12) =467716a(13) =1759422a(14) =7968204a(15) =31922840a(16) =152664200a(17) =646888154