86415

Appears in sequences

• Sum of terms in row n of A081539.at n=5A081540
• Partial sums of repdigits of A002281.at n=5A099674
• a(n) = 441*n^2 - 21.at n=13A145678
• Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 01000-11100-00111-00010 pattern in any orientation.at n=14A147333
• a(n) = 196*n^2 - n.at n=20A158003
• Numbers obtained by adding the first k repdigits that consist of the same digit, for some number k.at n=42A346535
• a(n) = Sum_{k=1..n} (-1)^(k-1) * binomial(floor(n/k)+3,4).at n=36A366659