20146

Appears in sequences

• 4-dimensional centered tetrahedral numbers.at n=17A008498
• Number of conjugacy classes of elements of order n in E_8(C).at n=30A045514
• Numbers m such that product of factorials of digits of m equals sigma(m).at n=7A137603
• 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), (0, 1, -1), (0, 1, 1), (1, 0, 0), (1, 1, 0)}.at n=7A151137
• Table of consecutive numbers with the same sum of divisors.at n=25A225757
• Numbers k that divide sigma(k) - sigma(k-1).at n=19A227307
• The number of permutations of length n sortable by 2 prefix block transpositions.at n=17A228394
• Numbers k such that sigma(k) = sigma(k-1).at n=12A231546
• Number of nX5 0..1 arrays with every element equal to 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero.at n=18A298090