49560

Appears in sequences

• 2nd elementary symmetric function of first n+1 positive integers congruent to 1 mod 3.at n=13A024212
• Triangle read by rows: T(n,k) (0<=k<=floor(n/2)) is the number of Delannoy paths of length n, having k ED's.at n=22A110221
• Let f(x) = 1 + x^2 + x^4 + x^5 + x^6 + x^10 + x^11; sequence has g.f. g(x) = 1/(x^11*f(1/x)).at n=38A157876
• Number of all possible tetrahedra of any size, having reverse orientation to the original regular tetrahedron, formed when intersecting the latter by planes parallel to its sides and dividing its edges into n equal parts.at n=42A216172
• Numbers n such that {largest m such that 1, 2, ..., m divide n} is different from {largest m such that m! divides n^2}.at n=29A232099
• G.f.: Limit_{K->oo} Sum_{n=-oo..+oo} x^(n-K) * (1 - x^n + n*(n+1)/6 * x^(n+K))^n.at n=54A292177
• Number of ways to write n as an ordered sum of 7 nonzero decimal palindromes.at n=15A341204
• Primorial deflation of the n-th colossally abundant number: the unique integer k such that A108951(k) = A004490(n).at n=28A342012
• Expansion of e.g.f. (1/x) * Series_Reversion( x*(1 + x^2/2*log(1-x)) ).at n=8A370996