93314

Appears in sequences

• Group the triangular numbers so that the n-th group sum is a multiple of n. 1, (3, 6, 10, 15), (21), (28), (36, 45, 55, 66, 78), (91, 105, 120, 136, 153, 171, 190), ... Sequence contains the group sums.at n=25A114031
• Number of (w,x,y,z) with all terms in {1,...,n} and w*x+y*z>n^2.at n=32A212136
• Squarefree integers m > 1 such that if prime p divides m, then s_p(m) >= p and s_p(m) == 2 (mod p-1), where s_p(m) is the sum of the base p digits of m.at n=17A324404
• Nullspace dimension of the periodic XX Heisenberg chain with n > 1 sites.at n=24A392387