56645

Appears in sequences

• Expansion of (1-x)^(-1)/(1+2*x-x^2-x^3).at n=14A077920
• a(n) = a(n-1) + 3*a(n-2) - a(n-4), with a(0)=1, a(1)=1, a(2)=4, a(3)=7.at n=14A124400
• a(n) = 81*n^2 - 90*n + 26.at n=27A154295
• The number of distinct positions on an infinite chessboard reachable by the (3,4)-leaper in <= n moves.at n=31A297741
• Bases b where exactly eight primes p with p < b exist such that p is a base-b Wieferich prime.at n=32A325884