89441

Appears in sequences

• a(1)=1, a(n)=ceiling(n*(a(n-1)+1/a(n-1))).at n=7A082570
• Octagonal numbers which are the sums of exactly two positive octagonal numbers.at n=37A136346
• Octagonal numbers with prime indices.at n=39A267144
• Terms of A324315 (squarefree integers m > 1 such that if prime p divides m, then the sum of the base p digits of m is at least p) that are also octagonal numbers (A000567) with index equal to their largest prime factor.at n=8A324320
• Octagonal numbers that are the product of three distinct primes.at n=31A382231