a(n) = bitwise OR of all terms of n-th row of Pascal's triangle.

Terms

a(0) =1a(1) =1a(2) =3a(3) =3a(4) =7a(5) =15a(6) =31a(7) =55a(8) =127a(9) =127a(10) =255a(11) =511a(12) =1023a(13) =2047a(14) =4095a(15) =8191a(16) =16383a(17) =32767a(18) =65535a(19) =126975a(20) =262143a(21) =524287a(22) =1048575a(23) =2097151a(24) =4194303a(25) =8388607a(26) =16777215a(27) =33554431a(28) =67108863a(29) =134217727