893101
domain: N
Appears in sequences
- Odd pentagonal pyramidal numbers.at n=30A015223
- Composite numbers whose prime factors contain no digits other than 1 and 6.at n=25A036306
- The terms of A073211 (sums of two powers of 11) divided by 2.at n=25A073219
- a(n) = n^4*(n^4-1)/240.at n=11A078876
- a(n) = (3^n - 1)^2*(3^n + 1)/16.at n=5A152257
- a(n) = n^4*(n^2 + 1)/2.at n=11A168192
- a(n) = (A372966(n) - 1)/240.at n=10A373039
- a(n) = (8*n + 1)^2*(4*n + 1).at n=15A387684