24766

Appears in sequences

• Otto Haxel's guess for magic numbers of nuclear shells.at n=42A033547
• Number of partitions of n into parts not a multiple of 7. Also number of partitions with at most 6 parts of size 1 and differences between parts at distance 9 are greater than 1.at n=40A035985
• Numbers n such that the sum of the digits of the n-th Fibonacci number written in bases 2, 3, 5 and 7 is prime.at n=30A111064
• a(n) = prime(prime(prime(A028815(n) - 1) - 1) - 1) - 1.at n=22A141133
• 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, 0, 1), (0, 1, -1), (1, -1, 1), (1, 0, 1)}.at n=9A148958
• If 0 <= n <= 3 then a(n) = n(n+1)(n+2)/3, if n >= 4 then a(n) = n(n^2+5)/3.at n=42A162626
• prime(n^3) - prime(n).at n=13A214612
• Bisection of A006950 (the odd part).at n=25A233759
• Number T(n,k) of tilings of a 2 X n X n box using k bricks of shape 2 X 1 X 1 and 2*(n^2-k) bricks of shape 1 X 1 X 1; triangle T(n,k), n>=0, 0<=k<=n^2, read by rows.at n=13A287152
• Number of nX2 0..1 arrays with every element unequal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=14A318031
• Triangle read by rows giving the sum of the number of k-matchings of the graphs obtained by deleting one edge and its two vertices from the ladder graph L_n = P_2 X P_n in all possible ways.at n=42A318243
• Irregular triangle of denominators of the average value of the first letter over all derangements of {1, 2, ..., n} with k descents.at n=36A332010