Triangle of Gaussian binomial coefficients (or q-binomial coefficients) [n,k] for q = 2.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =7a(8) =7a(9) =1a(10) =1a(11) =15a(12) =35a(13) =15a(14) =1a(15) =1a(16) =31a(17) =155a(18) =155a(19) =31a(20) =1a(21) =1a(22) =63a(23) =651a(24) =1395a(25) =651a(26) =63a(27) =1a(28) =1a(29) =127