Irregular triangle read by rows: T(n,k) is the number of n X n binary matrices containing k South-East paths of 1's connecting the top left and bottom right corners.

A380392

Irregular triangle read by rows: T(n,k) is the number of n X n binary matrices containing k South-East paths of 1's connecting the top left and bottom right corners.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =13a(4) =2a(5) =1a(6) =461a(7) =26a(8) =13a(9) =8a(10) =1a(11) =2a(12) =1a(13) =61708a(14) =1454a(15) =953a(16) =568a(17) =325a(18) =112a(19) =178a(20) =76a(21) =22a(22) =46a(23) =48a(24) =2a(25) =16a(26) =4a(27) =4a(28) =8a(29) =8

External references