41104
domain: N
Appears in sequences
- Expansion of sin(x)*cosh(tan(x)).at n=4A009539
- Expansion of e.g.f.: sin(x)*exp(tan(x)).at n=9A009543
- Number of nonnegative integer 3 X 3 matrices with sum of elements equal to n, under action of dihedral group of the square D_4.at n=14A054343
- Powers of ten written in base 7.at n=4A055478
- Numbers n such that both n and prime(n) consist of square digits (0,1,4,9).at n=5A107613
- Expansion of g.f. 1/(1 - x + 2*x^3 + x^4).at n=27A112518
- Number of ways to place 2 non-attacking ferses on an n X n board.at n=16A201243
- Triangle read by rows: T(n,k) is the number of tilings of a 2 X n board with 1 X 1 and L-shaped tiles (where the L-shaped tiles cover 3 squares) that have k L-shaped tiles.at n=57A245966
- Number of tilings of a 10 X n rectangle using 2n pentominoes of shape L.at n=12A247120
- p-INVERT of (0,1,0,1,0,1,...), where p(S) = (1 - S)(1 - 2 S)(1 - 3 S)(1 - 4 S).at n=5A291231
- Numbers with decimal expansion d_1, ..., d_w such that for any k in 1..w there is some m in 1..w such that d_k = d_m = abs(k - m).at n=30A336880