88577

Appears in sequences

• Expansion of e.g.f. exp(arctanh(x)/exp(x)).at n=10A013573
• 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 19.at n=34A031607
• Numbers which can written in exactly four ways as a sum of two distinct nonzero pentagonal numbers.at n=15A333014
• a(n) is the least k such that A322523(k) = n.at n=11A354538