68076

Appears in sequences

• Truncated square pyramid numbers: a(n) = Sum_{k = n..2*n-1} k^2.at n=31A050410
• a(n) = smallest non-palindromic k such that the base-2 Reverse and Add! trajectory of k is palindrome-free and joins the trajectory of A092210(n).at n=6A092212
• Structured triakis tetrahedral numbers (vertex structure 4).at n=35A100175
• Number of nX2 0..4 arrays with no three equal values in a row horizontally or vertically, and new values 0..4 introduced in row major order.at n=4A222920
• Number of nX5 0..4 arrays with no three equal values in a row horizontally or vertically, and new values 0..4 introduced in row major order.at n=1A222923
• T(n,k)=Number of nXk 0..4 arrays with no three equal values in a row horizontally or vertically, and new values 0..4 introduced in row major order.at n=16A222924
• T(n,k)=Number of nXk 0..4 arrays with no three equal values in a row horizontally or vertically, and new values 0..4 introduced in row major order.at n=19A222924
• p-INVERT of (1,0,0,1,0,0,1,0,0,...), where p(S) = 1 - S - S^3.at n=20A292320
• Number of ways to write n as an ordered sum of 6 prime powers (including 1).at n=29A341135
• Expansion of e.g.f. 1/(1 - x^2/2 * (exp(x) - 1)).at n=9A353998
• Square array T(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of e.g.f. 1/(1 - x^k/k! * (exp(x) - 1)).at n=75A355666