31926

Appears in sequences

• Numbers k such that k*(3k-1)/2 is a pentagonal palindrome.at n=13A028386
• Partial sums of A001372.at n=11A125023
• Number of (n+1) X 4 binary arrays with consecutive windows of two bits considered as a binary number nondecreasing in every row and column.at n=20A202330
• Numbers of graphs which are double triangle descendants of K_5 with four more vertices than triangles.at n=39A332735
• a(0) = 0. a(n) = the second smallest number greater than a(n-1) that cannot be written as a sum of any previous distinct terms.at n=18A343328