Column 1 of triangle A135888, which equals the matrix cube of triangle A135880; also equals column 1 of triangle A135895.
A135890
Column 1 of triangle A135888, which equals the matrix cube of triangle A135880; also equals column 1 of triangle A135895.
Terms
- a(0) =1a(1) =6a(2) =39a(3) =300a(4) =2741a(5) =29380a(6) =363922a(7) =5135894a(8) =81557270a(9) =1441771540a(10) =28114817877a(11) =600012111858
External references
- oeis: A135890