276002
domain: N
Appears in sequences
- Majority value maps: number of n X 2 binary arrays indicating the locations of corresponding elements equal to at least half of their king-move neighbors in a random 0..1 n X 2 array.at n=10A220213
- Coefficients in the expansion of 1/([r] + [2r]x + [3r]x^2 + ...); [ ] = floor, r = Pi/2.at n=18A279592
- Coefficients of 1/(Sum_{k>=0} [(k+1)*r]*(-x)^k), where r = Pi/2 and [ ] = floor.at n=18A288229
- Sequence lists numbers k > 1 such that k^2 == phi(k) (mod sigma(k)), where phi = A000010 and sigma = A000203.at n=33A324214