40297

Appears in sequences

• Numbers k such that the digits of k^2 are exactly the same (albeit in different order) as the digits of (k+1)^2.at n=14A072841
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, 0), (0, 1, 0), (1, 0, -1), (1, 1, 1)}.at n=8A150606
• Triangle, read by rows, T(n, k) = (prime(n+1) - prime(k+1))! - (n! - k!).at n=11A158748
• Integral of exp(-x)*Phi_n(x) from 0 to infinity, Phi_n the n-th cyclotomic polynomial.at n=23A182103
• Number of (n+1) X 3 0..1 matrices with each 2 X 2 permanent equal.at n=5A224739
• Number of (n+1)X7 0..1 matrices with each 2X2 permanent equal.at n=1A224743
• T(n,k) is the number of (n+1) X (k+1) 0..1 matrices with each 2 X 2 permanent equal.at n=22A224745
• T(n,k) is the number of (n+1) X (k+1) 0..1 matrices with each 2 X 2 permanent equal.at n=26A224745
• a(n) = (2n)! - n! + 1.at n=4A237580
• a(n) = Sum_{k=0..floor(n/4)} (-1)^k * (n-4*k)!.at n=8A358609