156122

Appears in sequences

• a(n)=2*5^n-2^n.at n=7A083421
• Deficient numbers whose aliquot sequence is deficient, abundant, deficient, ..., etc.at n=32A234970
• (Round(c^prime(n)) - 1)/prime(n), where c is the tetranacci constant (A086088).at n=5A239544