Numbers k that are divisors of the number formed by concatenating (k-1), k and (k+1), in that order.
A088877
Numbers k that are divisors of the number formed by concatenating (k-1), k and (k+1), in that order.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =11a(4) =33a(5) =111a(6) =117a(7) =143a(8) =189a(9) =231a(10) =259a(11) =273a(12) =297a(13) =333a(14) =351a(15) =407a(16) =429a(17) =481a(18) =693a(19) =777a(20) =819a(21) =1111a(22) =1233a(23) =1507a(24) =2409a(25) =3333a(26) =4521a(27) =7227a(28) =7373a(29) =11111
External references
- oeis: A088877