73173
domain: N
Appears in sequences
- Concatenations of pairs of primes that differ by 100.at n=6A103523
- Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 462", based on the 5-celled von Neumann neighborhood.at n=8A272310
- p-INVERT of (1,0,0,0,1,0,0,0,0,0,...), where p(S) = (1 - S)^2.at n=31A292325
- a(n) is the number of permutations of [n] that avoid 312 and 4321 and whose square avoids 231.at n=15A381858