A023991 Sum of exponents of primes in multinomial coefficient M(3n; n+1,n,n-1).

1, 4, 6, 8, 8, 12, 12, 13, 13, 15, 17, 20, 19, 22, 21, 22, 21, 24, 25, 26, 25, 31, 30, 32, 30, 31, 33, 33, 32, 36, 34, 36, 34, 36, 36, 37, 36, 40, 40, 42, 40, 45, 48, 49, 49, 51, 50, 52, 49, 50, 50, 53, 50, 56, 53, 53, 53, 55, 58, 60, 59, 62, 60, 60, 55, 58, 59, 61, 60, 65, 62, 65, 63, 66, 69, 68

Offset

1,2

Links

Table of n, a(n) for n=1..76.

Crossrefs

Sequence in context: A247654 A262767 A104173 * A183005 A103189 A083786

Adjacent sequences: A023988 A023989 A023990 * A023992 A023993 A023994

Keyword

nonn

Author

Clark Kimberling

Status

approved