43521

Appears in sequences

• a(n) is the least positive integer such that nextprime(a(n)^n) - prevprime(a(n)^n) = 4.at n=22A090125
• Numbers with 5 distinct digits {1,2,3,4,5} such that all adjacent digits (as well as first and last digits) are coprime.at n=43A104972
• Sieve performed by successive iterations of steps where step m is: keep m terms, remove the next 3 and repeat; as m = 1,2,3,.. the remaining terms form this sequence.at n=23A112561
• Sum of heights of all skew Dyck paths of semilength n.at n=7A129162
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 793", based on the 5-celled von Neumann neighborhood.at n=7A273565
• Concatenation of the permutation of (1, ..., n) that maximizes the minimal sum of increasing concatenations.at n=4A328861