36180

Appears in sequences

• a(n) is the concatenation of n and 5n.at n=35A019553
• a(n) = n! - (n-th Bell number).at n=8A048742
• a(n) = a(n-1) + 16*a(n-2), starting a(0)=1, a(1)=4.at n=7A158608
• Triangle read by rows: number of permutation trees of power n and height <= n - k.at n=31A179456
• Numbers whose arithmetic derivatives are a permutation of their digits.at n=39A225902
• Number of overcompositions of n minus the number of overpartitions of n.at n=13A237045
• Number of (n+1) X (2+1) 0..2 arrays with the maximum plus the minimum of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=4A237228
• Number of (n+1)X(5+1) 0..2 arrays with the maximum plus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=1A237231
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=16A237234
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=19A237234
• Numbers k such that 3*10^k + 13 is prime.at n=22A290473
• A(n, k) = A309522(n, k) - A327001(n, k) for n >= 0 and k >= 3, square array read by ascending antidiagonals.at n=26A327000
• Exponential (2,4)-perfect numbers: numbers m such that esigma(esigma(m)) = 4m, where esigma(m) is the sum of exponential divisors of m (A051377).at n=16A328133
• First elements of maximal isospectral chains of length 3.at n=2A335082
• Antidiagonal sums of the array defined in A385623.at n=35A385624