71920

Appears in sequences

• a(n) = 2*binomial(n,4).at n=32A034827
• Truncated square pyramid numbers: a(n) = Sum_{k = n..2*n} k^2.at n=31A050409
• a(n) = 10*a(n-1)-24*a(n-2) for n>1, a(0)=1, a(1)=25.at n=5A081195
• Difference between ceiling(e^(n/2 - 1)) (A005181) and the n-th Fibonacci number (A000045).at n=27A096766
• Number of ways to change three non-identical letters in the word aabbccdd..., where there are n types of letters.at n=29A102860
• Period (multiplicative order base 10) of the terms in A116074 and A116075.at n=19A116076
• Triangle T(n, k) = binomial(n*k, n-k) + binomial(n*(n-k), k), read by rows.at n=40A157114