18438

Appears in sequences

• Trails of length n on cubic lattice.at n=6A006819
• Expected number of random moves in Tower of Hanoi problem with n disks starting with a randomly chosen position and ending at a position with all disks on the same peg.at n=7A007798
• Numerators of convergents to Euler-Mascheroni constant.at n=11A046114
• Number of starting positions of Nim with 2n pieces such that 2nd player wins. Partitions of 2n such that xor-sum of partitions is 0.at n=25A048833
• Nested floor product of n and fractions (k+1)/k for all k>0 (mod 5), divided by 5.at n=17A073362
• Least k such that k*(2^p-1)*(k*(2^p-1)+1)+1 is prime, where 2^p-1 runs through the Mersenne primes.at n=20A137909
• Triangle read by rows, k!*2^k*S_2(n, k) where S_m(n, k) are the Stirling-Frobenius subset numbers of order m; n >= 0, k >= 0.at n=30A225476
• Number of partitions p of n such that mean(p) > multiplicity(min(p)).at n=40A240206
• Number of different coefficient values in expansion of Product_{k=1..n} (1+x^(k^2)).at n=48A369786