22198

Appears in sequences

• Numbers k such that 7!*(2k-8)!/(k!*(k-1)!) is an integer.at n=27A004787
• a(n) is the concatenation of n and 9n.at n=21A009474
• Number of partitions satisfying cn(1,5) + cn(4,5) < cn(0,5) + cn(2,5) + cn(3,5).at n=41A039868
• Triangle of numbers relating two sequences A073155 and A073156.at n=36A073153
• Triangle of numbers relating two sequences (A073157 and A073155).at n=35A073154
• Leftmost column sequence of triangle A073153.at n=8A073155
• Smallest multiple of n beginning with n and having a digit sum n, or 0 if no such number exists.at n=21A077727
• Convoluted convolved Fibonacci numbers G_7^(r).at n=19A089113
• Sign twisted convoluted convolved Fibonacci numbers H_7^(r).at n=19A089114
• a(n) = prime(n)^2-3.at n=34A182200
• Numbers n such that n!8-1 is prime.at n=58A204662
• Smallest number requiring n steps to reach a prime under the "add a digit" process described in A241180.at n=8A241182
• Number of partitions of n into 7 parts such that every i-th smallest part (counted with multiplicity) is different from i.at n=35A244243
• Coefficient of x^n in Product_{k>=1} (1 + x^k)^(k*n).at n=7A270922
• Smallest number requiring n steps to reach a prime under the "add a digit" process described in A241181.at n=9A336382
• Number of integer partitions of n such that the least and greatest parts are both even or both odd.at n=40A391225