39639

Appears in sequences

• Numbers k such that 77*2^k+1 is prime.at n=12A032388
• Number of ways to partition {1,2,...,n} into arithmetic progressions, where in each partition all the progressions have the same common difference and have lengths >= 2.at n=24A072255
• 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, 1), (-1, 1, 1), (1, 0, -1), (1, 0, 0), (1, 1, 0)}.at n=8A150451
• Number of unlabeled functions on n nodes that have at least one fixed point.at n=12A217896
• Expansion of Product_{k>=1} ((1 + x^k) / (1 + x^(2*k)))^k.at n=25A285289
• Number of compositions of n with equal differences up to sign.at n=49A325557
• Row sums of the triangle A325982.at n=17A325983
• The lowest number on Ulam Spiral for which all numbers in the square which is centered at a(n) and spans n-1 spaces in each cardinal direction are nonprime.at n=4A357376