Triangle read by rows: T(n,k) (n >= 0, 1 <= k <= n+1) are the signed Hultman numbers.

Terms

a(0) =1a(1) =1a(2) =1a(3) =4a(4) =3a(5) =1a(6) =20a(7) =21a(8) =6a(9) =1a(10) =148a(11) =160a(12) =65a(13) =10a(14) =1a(15) =1348a(16) =1620a(17) =701a(18) =155a(19) =15a(20) =1a(21) =15104a(22) =19068a(23) =9324a(24) =2247a(25) =315a(26) =21a(27) =1a(28) =198144a(29) =264420