Composites in base 10 that remain composite in exactly five bases b, 2 <= b <= 10, expansions interpreted as decimal numbers.
A256353
Composites in base 10 that remain composite in exactly five bases b, 2 <= b <= 10, expansions interpreted as decimal numbers.
Terms
- a(0) =55a(1) =169a(2) =247a(3) =253a(4) =323a(5) =493a(6) =529a(7) =556a(8) =671a(9) =1027a(10) =1111a(11) =1243a(12) =1261a(13) =1339a(14) =1375a(15) =1711a(16) =1751a(17) =1803a(18) =2185a(19) =2413a(20) =2431a(21) =2881a(22) =3193a(23) =4381a(24) =4417a(25) =4843a(26) =5029a(27) =5203a(28) =5251a(29) =6631
External references
- oeis: A256353