Column 0 of triangle A135888, which equals the matrix cube of triangle A135880; also equals column 1 of triangle A135894.
A135889
Column 0 of triangle A135888, which equals the matrix cube of triangle A135880; also equals column 1 of triangle A135894.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =63a(4) =421a(5) =3472a(6) =34380a(7) =399463a(8) =5344770a(9) =81097517a(10) =1377986373a(11) =25947738574a(12) =536726987593
External references
- oeis: A135889