260417

Properties

Appears in sequences

• a(n) = (2*5^n + (-1)^n)/3.at n=8A083217
• Centered hexamorphic numbers: the k-th centered hexagonal number, 3k(k-1)+1, ends in k.at n=25A094534
• Greatest prime factor of 2*n^4 + 1.at n=24A140538
• Prime numbersat n=22867