Triangle read by rows: row n is the expansion of p(x,n)=If[n == 0, 1, (x + 1)^n + 2^(n - 3)*Sum[(2^(m - 1) +n*m - n + 1)*x^m*(1 + x^(n - 2*m)), {m, 1, n - 1}].
A146967
Triangle read by rows: row n is the expansion of p(x,n)=If[n == 0, 1, (x + 1)^n + 2^(n - 3)*Sum[(2^(m - 1) +n*m - n + 1)*x^m*(1 + x^(n - 2*m)), {m, 1, n - 1}].
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =1a(6) =1a(7) =11a(8) =11a(9) =1a(10) =1a(11) =34a(12) =34a(13) =34a(14) =1a(15) =1a(16) =109a(17) =102a(18) =102a(19) =109a(20) =1a(21) =1a(22) =350a(23) =303a(24) =292a(25) =303a(26) =350a(27) =1a(28) =1a(29) =1127
External references
- oeis: A146967