A230304 a(n) = 10^( (10^n-1)/9 + n) + 1.

101, 10000000000001, 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001

Offset: 1

Author

N. J. A. Sloane, Oct 26 2013

Keywords

• nonn
• base

Comments

Makowski observes that A230093(a(n)) >= 2 for all n >= 1.

References

• Makowski, Andrzej. On Kaprekar's "junction numbers''. Math. Student 34 1966 77 (1967). MR0223292 (36 #6340)

Links

• Index entries for Colombian or self numbers and related sequences

Crossrefs

Cf. A006064, A230093, A230094, A230100.