79820

Appears in sequences

• 10-gonal (or decagonal) pyramidal numbers: a(n) = n*(n + 1)*(8*n - 5)/6.at n=39A007585
• a(n) = n*(n^3 - n + 2)/2.at n=20A101374
• Even, nonzero decagonal pyramidal numbers.at n=18A218331
• Agreement numbers: number of n X 2 arrays of the count of horizontal and vertical neighbors equal to the corresponding element in a random 0..3 n X 2 array.at n=6A220783
• T(n,k)=Agreement numbers: number of nXk arrays of the count of horizontal and vertical neighbors equal to the corresponding element in a random 0..3 nXk array.at n=29A220786
• T(n,k)=Agreement numbers: number of nXk arrays of the count of horizontal and vertical neighbors equal to the corresponding element in a random 0..3 nXk array.at n=34A220786
• T(n,k)=Agreement numbers: number of nXk arrays of the count of horizontal and vertical neighbors equal to the corresponding element in a random 0..2 nXk array.at n=29A220800
• T(n,k)=Agreement numbers: number of nXk arrays of the count of horizontal and vertical neighbors equal to the corresponding element in a random 0..2 nXk array.at n=34A220800
• Expansion of Sum_{k>0} (1/(1-x^k)^5 - 1).at n=33A363695