31420

Appears in sequences

• Each permutation in the list A060117 converted to Site Swap notation, with digits reversed. "Zero throws" (fixed elements) indicated with 0's.at n=38A060496
• (x,y) = (a(n),a(n+1)) are the solutions of (t(x)+t(y))/(1+xy) = t(4) = 10, where t(n) denotes the n-th triangular number t(n) = n*(n+1)/2.at n=3A065930
• Numbers such that the digital sum base 2 and the digital sum base 3 and the digital sum base 10 all are equal.at n=35A135120
• Number of unrooted binary leaf-multi-labeled trees with n leaves on the label set [4].at n=7A220828
• Number of length n+2 0..3 arrays with the sum of the maximum minus the minimum of adjacent triples multiplied by some arrangement of +-1 equal to zero.at n=5A252172
• T(n,k)=Number of length n+2 0..k arrays with the sum of the maximum minus the minimum of adjacent triples multiplied by some arrangement of +-1 equal to zero.at n=33A252177
• Number of length 6+2 0..n arrays with the sum of the maximum minus the minimum of adjacent triples multiplied by some arrangement of +-1 equal to zero.at n=2A252182
• Numbers k such that (10^k/8 + 1)/9 is prime.at n=12A296059
• Number of non-isomorphic multiset partitions of weight n using singletons or pairs.at n=13A320663