

A306951


Number of weird numbers (A006037) below 10^n.


0




OFFSET

1,3


COMMENTS

Benkoski and Erdős proved that the asymptotic density of weird numbers is positive, thus lim_{n>oo} a(n)/10^n = c > 0. Is c = 0.0017...?


LINKS

Table of n, a(n) for n=1..10.
S. J. Benkoski and P. Erdős, On weird and pseudoperfect numbers, Math. Comp., 28 (1974), pp. 617623. Alternate link; 1975 corrigendum


EXAMPLE

The only weird number below 100 is 70 which is larger than 10, thus a(1) = 0 and a(2) = 1.


CROSSREFS

Cf. A006037, A275487, A275491, A302992.
Sequence in context: A307582 A125610 A247028 * A181864 A096463 A048560
Adjacent sequences: A306948 A306949 A306950 * A306952 A306953 A306954


KEYWORD

nonn,more


AUTHOR

Amiram Eldar, Mar 17 2019


STATUS

approved



