58980

Appears in sequences

• Number of twin prime pairs below 10^n.at n=6A007508
• Occurrences of most frequently occurring number in 1-to-n 5-dimensional multiplication table.at n=41A057344
• a(n) = 4 * floor(9*2^n/5).at n=13A102653
• a(n) = A014486(A122228(n)).at n=8A122229
• Triangle read by rows: a(1,1) = 1. a(m,m) = sum of all terms in rows 1 through m-1. a(m,n) = a(m-1,n) + (sum of all terms in rows 1 through m-1), for n < m.at n=33A159927
• Let G denote the 9-node, 16-edge graph formed from an octagon with main diagonals drawn and a node at the center; a(n) = number of magic labelings of G with magic sum 2n.at n=6A244867
• Number of 4Xn 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=9A302312
• a(n) = A352682(4, n).at n=9A352683
• Coefficient of x^n in the expansion of ( (1+x)^5 + x^2 )^n.at n=5A388531