25816

Appears in sequences

• Principal diagonal of the convolution array A213778.at n=41A213779
• Number of 2Xn 0..2 arrays with exactly floor(2Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.at n=10A222489
• Total sum of parts of multiplicity 9 in all partitions of n.at n=44A222737
• a(n) = A253086(2^n-1).at n=8A253087
• Numbers k such that the sum of iterations of the alternating sum of divisors function A071324 starting from k is equal to 2*k.at n=5A333263