Sums of the squares of multinomial coefficients.
A183240
Sums of the squares of multinomial coefficients.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =46a(4) =773a(5) =19426a(6) =708062a(7) =34740805a(8) =2230260741a(9) =180713279386
External references
- oeis: A183240