27473

Appears in sequences

• Number of positions in game "Connect Four" (played on usual 6-row, 7-column board) after n moves, up to reflection.at n=7A013582
• Number of positive integers <= 2^n of form 4 x^2 + 5 y^2.at n=18A054169
• Concerning the popular MMORPG "Runescape" by JAGeX corporation, this sequence gives the number of experience points needed for a given level in a skill.at n=36A111078
• Numerators of partial sums of Catalan numbers scaled by powers of -1/4.at n=8A120788
• Smallest number m such that prime(n) is a factor of both m and sigma(m).at n=22A156099
• Number of (n+1) X 5 binary arrays with every 2 X 2 subblock commuting with each of its horizontal and vertical 2 X 2 subblock neighbors.at n=14A186457
• G.f.: Sum_{k>=1} x^k/(1-x^k) * Product_{k>=1} (1+x^k).at n=42A305082
• Number of partitions p of n such that min(p) < (number of parts of p) <= max(p).at n=41A325342