

A055629


Beginning of first run of at least n consecutive happy numbers.


3




OFFSET

1,2


COMMENTS

This sequence is infinite  see Theorem 3.1 of ElSedy & Siksek.


LINKS

Esam ElSedy and Samir Siksek, On happy numbers, Rocky Mountain J. Math. 30 (2000), 565570.


EXAMPLE

Lambert Klasen (lambert.klasen(AT)postmaster.co.uk), Oct 17 2004: with notation {9:repeat_count_of_digit_nine}, a(8) = 58{9:11}6{9:143}95, a(9) = 16{9:179}4{9:87}95, a(10) = 16{9:181}5{9:696}95.


CROSSREFS



KEYWORD

base,nonn


AUTHOR



EXTENSIONS

The next term a(8) is too large to include.


STATUS

approved



