27980

Appears in sequences

• 24 'Reverse and Add' steps are needed to reach a palindrome.at n=7A065318
• Number of one-element transitions among partitions of the integer n for unlabeled parts.at n=25A093695
• a(n+1)-+a(n)=prime, a(n+1)*a(n)=Average of twin prime pairs, a(1)=1,a(2)=4.at n=37A154493
• a(n) = 1000*n - 20.at n=27A157515
• Number of nX3 0..3 arrays with exactly floor(nX3/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order.at n=6A222271
• T(n,k) = Number of n X k 0..3 arrays with exactly floor(n X k/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order.at n=38A222275
• T(n,k) = Number of n X k 0..3 arrays with exactly floor(n X k/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order.at n=42A222275