Factorial expansion of A071156.

Terms

a(0) =1a(1) =11a(2) =21a(3) =111a(4) =121a(5) =211a(6) =221a(7) =321a(8) =1111a(9) =1121a(10) =1211a(11) =1221a(12) =1321a(13) =2111a(14) =2121a(15) =2211a(16) =2221a(17) =2321a(18) =3211a(19) =3221a(20) =3321a(21) =4321a(22) =11111a(23) =11121a(24) =11211a(25) =11221a(26) =11321a(27) =12111a(28) =12121a(29) =12211