64634

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 20.at n=15A031608
• First differences of A116084.at n=28A116085
• Number of integer compositions of n with all parts > 1 that are not the first sums of any composition.at n=25A391681