53508

Appears in sequences

• Distinct even numbers in the numerators of the 1/5-Pascal triangle (by row).at n=34A046626
• Distinct even numbers in writing numerators of each element to the right of the central elements of the 1/5-Pascal triangle (by row).at n=28A046629
• Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 1 skipped prime.at n=26A050768
• Consider necklaces with n beads, each black or white, where the n segments of cord between the beads are each colored red or green; a(n) is the number of different necklaces under the action of the dihedral group D_{2n}.at n=10A161221
• Areas of nondegenerate triangles with perimeter A385737(n) whose side lengths are triangular numbers.at n=18A385872