10909440
domain: N
Appears in sequences
- Convolution of C(2,2; n) := A064340(n) (generalized Catalan numbers) with itself.at n=8A067297
- Generalized Catalan triangle, based on C(2,2; n) = A064340(n).at n=44A067298
- Generalized Catalan triangle A067298 with row reversion.at n=36A067304
- Even-indexed members of A067297.at n=4A067320
- Expansion of e.g.f. 1/( 1 - x * cos(sqrt(2)*x) ).at n=10A381345