73180

Appears in sequences

• Sum of staircase twin primes according to the rule: top * bottom + next top.at n=17A135286
• Number of n X 2 0..3 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 4 and at least one element with value (x(i,j)-1) mod 4, no adjacent elements equal, and upper left element zero.at n=12A230825
• G.f. A(x) satisfies: 1/(1 - x) = A(x)*A(x^2)^2*A(x^3)^3*A(x^4)^4* ... *A(x^k)^k* ...at n=40A307648
• Number of ways to write n as an ordered sum of 10 primes.at n=17A340966