80010

Appears in sequences

• a(n) = (n^4 + n)/2 (Row sums of an n X n X n magic cube, when it exists).at n=20A027441
• Numbers of the form k*(k^3 +- 1)/2.at n=39A057590
• Take the n-th pair of consecutive digits of the sequence and form their absolute difference; the result is the n-th digit of the sequence; a(n) < a(n+1).at n=16A102694
• Magic constant of smallest order-n perfect magic cube.at n=19A109130
• Numbers n that raised to the powers from 1 to k (with k>=1) are multiple of the sum of their digits (n raised to k+1 must not be a multiple). Case k=11.at n=17A135196
• E.g.f.: (2 + exp(3*x)) / (4 - exp(3*x)).at n=6A228938
• Let x(0)x(1)x(2)... x(q) denote the decimal expansion of n. Sequence lists the numbers n such that the suffix of decimal expansion x(1)x(2)... x(q) is the x(0)-th divisor of n.at n=40A234314
• Number of (n+1) X (1+1) 0..3 arrays with 2 X 2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both.at n=3A234753
• Number of (n+1)X(4+1) 0..3 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both.at n=0A234756
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both.at n=6A234760
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both.at n=9A234760
• Consider a number k with m decimal digits, the prefix p of length m-1 and the suffix s of length m-1. The sequence lists the numbers k such that sigma(k) = sigma(p)*sigma(s) where sigma(x) is the sum of the divisors of x.at n=31A244313
• Table read by antidiagonals: T(w,n) is the number of n-step self avoiding walks on a 3D cubic lattice confined inside a tube of cross section 2w X 2w where the walk starts at the middle of the tube.at n=48A337400