67574

Appears in sequences

• Expansion of (1+3*x^2+7*x^3+15*x^4+13*x^5+15*x^6+8*x^7+4*x^8)/((1-x)*(1-x^2)^3*(1-x^3)^2).at n=23A037241
• Numbers k such that k and k^2 use only the digits 2, 4, 5, 6 and 7.at n=48A137094
• a(n) = 100*n^2 - n.at n=25A157659
• a(n) = 400*n^2 - 2*n.at n=12A158316
• a(n) = 676*n^2 - 26.at n=9A158639
• Number of nondecreasing arrangements of n numbers in -3..3 with sum zero and sum of squares less than n*12/3.at n=38A183929