A071297 Number of n-digit terms of A070153.
2, 5, 4, 10, 8, 56, 8, 39, 10, 38, 9, 208, 15, 37, 95, 143, 7, 502, 2, 319, 184, 235, 2, 1631, 68, 142, 58, 614, 71, 14216, 14, 5286, 81, 149, 251, 4018, 12, 17, 79, 5162, 21, 43065, 34, 3858, 932, 140, 6, 12852, 27, 2457, 360, 1121, 37, 10014
Offset: 1
Examples
a(3) = 4 since 119, 403, 533, 623 are the only three-digit terms of A070153.
Links
- R. Hoshino, Astonishing Pairs of Numbers, Crux Mathematicorum 27(1), 2001, p. 39-44.
Extensions
Edited and corrected by Klaus Brockhaus, Jun 06 2003
a(6), a(7) and a(8) from Klaus Brockhaus, Jun 20 2003
a(6) corrected and terms a(9) onward added by Max Alekseyev, Feb 13 2012
Comments