Numerical equivalents of the words zero, one, two, three, ... on touch-tone telephone.

Terms

a(0) =9376a(1) =663a(2) =896a(3) =84733a(4) =3687a(5) =3483a(6) =749a(7) =73836a(8) =34448a(9) =6463a(10) =836a(11) =353836a(12) =893583a(13) =84478336a(14) =36878336a(15) =3438336a(16) =7498336a(17) =738368336a(18) =34448336a(19) =64638336a(20) =893689a(21) =893689663a(22) =893689896a(23) =89368984733a(24) =8936893687a(25) =8936893483a(26) =893689749