46651605

Appears in sequences

• Expansion of 1/( (1-x)*(1-34*x+x^2) ).at n=5A029546
• Pentagonal numbers that are half other pentagonal numbers.at n=1A107736
• Triangle T(n, k, m) = t(n, m)/(t(k, m)*t(n-k, m)), where t(n, k) = Product_{j=1..n} p(j, k+1), p(n, x) = Sum_{j=0..n} (-1)^j*A053122(n, j)*x^j, and m = 7, read by rows.at n=30A156601
• Triangle T(n, k, m) = t(n, m)/(t(k, m)*t(n-k, m)), where t(n, k) = Product_{j=1..n} p(j, k+1), p(n, x) = Sum_{j=0..n} (-1)^j*A053122(n, j)*x^j, and m = 7, read by rows.at n=33A156601
• a(n) is a generalized pentagonal number such that 2*a(n) is also a generalized pentagonal number.at n=6A305539
• a(n) = (A388291(n)^2 - 1)/24.at n=18A389355