login
A217725
Numbers n such that 5n is a partition number.
11
1, 3, 6, 27, 77, 98, 251, 315, 602, 913, 2462, 5203, 6237, 15035, 34705, 77231, 143044, 166364, 224301, 348326, 464704, 617547, 710869, 939441, 1417900, 2769730, 4101251, 5308732, 9999185, 18533944, 26646186, 33845975, 54249790, 60960273, 108389248
OFFSET
1,2
FORMULA
a(j) = A225325(j)/5.
EXAMPLE
3 is in the sequence because 5*3 = 15 and 15 is a partition number: p(7) = A000041(7) = 15.
MATHEMATICA
Select[PartitionsP[Range[300]], Mod[#, 5] == 0 &]/5 (* T. D. Noe, May 05 2013 *)
KEYWORD
nonn
AUTHOR
Omar E. Pol, May 05 2013
EXTENSIONS
a(9)-a(35) from R. J. Mathar, May 05 2013
STATUS
approved