81828

Appears in sequences

• Number of primitive (period n) n-bead necklaces with exactly four different colored beads.at n=9A056289
• Partition the concatenation 1234567...of natural numbers into successive strings which are multiples of 4, all different and > 4. (0 never taken as the most significant digit.)at n=27A077297
• Partition the concatenation 1234567...of natural numbers into successive strings which are multiples of 6, all different and > 6. (0 never taken as the most significant digit.)at n=31A077299
• Number of lower triangles of a 4 X 4 0..n array with no element differing from any of its horizontal or vertical neighbors by more than one.at n=12A194933
• Numbers k such that 3^k - 32 is prime.at n=21A219049