28989

Appears in sequences

• Number of partitions of n that do not contain 8 as a part.at n=40A027342
• Numbers k such that 10^999 + k is a (titanic) prime.at n=19A074282
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 974", based on the 5-celled von Neumann neighborhood.at n=7A273852
• Terms k of A228058 such that gcd(k - A048250(k), A162296(k) - k) = A162296(k) - k.at n=42A325376
• Numbers k in A228058 such that also A001065(k) is in A228058.at n=34A325380
• Odd composites k such that sigma(k) has the same powerful part as k, where sigma is the sum of divisors function.at n=24A386425