a(n) contains the digit b-1 in all bases b from 2 to n.

Terms

a(0) =1a(1) =2a(2) =7a(3) =14a(4) =23a(5) =47a(6) =47a(7) =239a(8) =239a(9) =239a(10) =239a(11) =5927a(12) =13679a(13) =13679a(14) =13679a(15) =57119a(16) =159119a(17) =500399a(18) =500399a(19) =1627919a(20) =2585519a(21) =3694397a(22) =7305479a(23) =17067599a(24) =41126399a(25) =41126399a(26) =41126399a(27) =61483967a(28) =586370399a(29) =589188599