28175

Appears in sequences

• Expansion of 1/(1-x^5-x^6-x^7-x^8-x^9-x^10-x^11-x^12).at n=46A017843
• Numerator of n*(n-2)*(2*n-1)/(2*(n-1)).at n=23A022997
• 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), (0, 1, -1), (1, 0, 0), (1, 1, 0)}.at n=9A149884
• Integers of the form A164577(k)/3.at n=33A164619
• Indices of pentagonal pyramidal numbers which are the sum of two other such numbers: k such that A002411(k) = A002411(i)+A002411(j) for some i,j>0.at n=38A172437
• Number of (w,x,y) with all terms in {0,...,n} and w>floor((x+y)/3).at n=34A212974
• a(n) = 23*n^2.at n=35A244632
• a(n) = Sum_{k=0..n} 2^(n-k)*p(k), where p(k) is the partition function A000041.at n=13A259401
• Abelian orders m for which there exist at least 4 groups of order m.at n=12A350323