a(n) = the first row sum of M^(n-1), where M = matrix(4,4, [1,1,1,1;0,1,2,3;0,1,3,6;0,1,4,10]).
A123224
a(n) = the first row sum of M^(n-1), where M = matrix(4,4, [1,1,1,1;0,1,2,3;0,1,3,6;0,1,4,10]).
Terms
- a(0) =1a(1) =4a(2) =35a(3) =428a(4) =5499a(5) =71022a(6) =917743a(7) =11859586a(8) =153256817a(9) =1980478970a(10) =25592969721a(11) =330728127324
External references
- oeis: A123224