123114

Appears in sequences

• Numbers k such that 243*2^k+1 is prime.at n=27A032498
• Let Do(n) = A006566(n) = n-th dodecahedral number. Consider all integer triples (i,j,k), j >= k>0, with Do(i) = Do(j) + Do(k), ordered by increasing i; sequence gives i values.at n=17A053017