Triangle read by rows: n-th row (n>=0) gives coefficients of the polynomial ((x+1)^(2^n) + (x-1)^(2^n))/2.
A201461
Triangle read by rows: n-th row (n>=0) gives coefficients of the polynomial ((x+1)^(2^n) + (x-1)^(2^n))/2.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =6a(5) =1a(6) =1a(7) =28a(8) =70a(9) =28a(10) =1a(11) =1a(12) =120a(13) =1820a(14) =8008a(15) =12870a(16) =8008a(17) =1820a(18) =120a(19) =1a(20) =1a(21) =496a(22) =35960a(23) =906192a(24) =10518300a(25) =64512240a(26) =225792840a(27) =471435600a(28) =601080390a(29) =471435600
External references
- oeis: A201461